Robert W. Freckmann Herbarium University of Wisconsin - Stevens Point Vascular Plants Plants of Wisconsin Home New Search

Search Results:       Common Name: grass

Family Agavaceae (click for list of genera only)
Yucca flaccida Haw. * +               Adam's needle, beargrass, yucca                  Yucca concava Haw.                  Yucca filamentosa L. var. concava (Haw.) Baker                  Yucca filamentosa L. var. flaccida (Haw.) Engelm.                  Yucca filamentosa L. var. glaucescens (Haw.) Baker                  Yucca filamentosa L. var. puberula (Haw.) Baker                  Yucca filamentosa L. var. smalliana (Fernald) Ahles                  Yucca flaccida Haw. var. glaucescens (Haw.) Trel.                  Yucca flaccida Haw. var. major (Baker) Rehder                  Yucca freemanii Shinners                  Yucca glaucescens Haw.                  Yucca louisianensis Trel.                  Yucca orchioides Carrière var. major Baker                  Yucca puberula Haw.                  Yucca smalliana Fernald
Family Alismataceae (click for list of genera only)
Alisma gramineum Lej. * +               grass-leaved water-plantain, narrow-leaved water-plantain                  Alisma geyeri Torr.                  Alisma gramineum Lej. var. angustissimum (DC.) Hendricks                  Alisma gramineum Lej. var. geyeri (Torr.) Lam.                  Alisma gramineum Lej. var. wahlenbergii auct. non (Holmb.) Raymond & Kucyn.                  Alisma gramineum Lej. var. graminifolium (Wahlenb.) Hendricks
Sagittaria graminea Michx. subsp. graminea * +               grass-leaved arrow-head, grass-leaved sagittaria                  Sagittaria cycloptera (J.G.Sm.) C.Mohr                  Sagittaria eatonii J.G.Sm.                  Sagittaria graminea Michx. var. graminea                  Sagittaria macrocarpa J.G.Sm.
Family Asteraceae (click for list of genera only)
Euthamia graminifolia (L.) Nutt. var. graminifolia * +               common flat-topped goldenrod, grass-leaved goldenrod                  Chrysocoma graminifolia L.                  Euthamia floribunda Greene                  Euthamia graminifolia (L.) Nutt. var. nuttallii (Greene) W.Stone                  Euthamia nuttallii Greene                  Solidago graminifolia (L.) Salisb.                  Solidago graminifolia (L.) Salisb. var. graminifolia                  Solidago graminifolia (L.) Salisb. var. nuttallii (Greene) Fernald                  Solidago graminifolia (L.) Salisb. var. polycephala (Fernald) Fernald                  Solidago graminifolia (L.) Salisb. var. typica Rosend. & Cronquist                  Solidago hirtella (Greene) Bush                  Solidago nuttallii (Greene) Bush                  Solidago polycephala Fernald
Euthamia gymnospermoides Greene * +               Great Plains flat-topped goldenrod, Texas goldentop, viscid grass-leaved goldenrod                  Euthamia camporum Greene                  Euthamia chrysothamnoides Greene                  Euthamia glutinosa Rydb.                  Euthamia media Greene                  Euthamia pulverulenta Greene                  Solidago camporum (Greene) A.Nelson                  Solidago chrysothamnoides (Greene) Bush                  Solidago graminifolia (L.) Salisb. var. gymnospermoides (Greene) Croat                  Solidago graminifolia (L.) Salisb. var. media (Greene) S.K.Harris                  Solidago gymnospermoides (Greene) Fernald                  Solidago gymnospermoides (Greene) Fernald var. callosa S.K.Harris                  Solidago media (Greene) Bush                  Solidago moseleyi Fernald                  Solidago perglabra Friesner                  Solidago texensis Friesner
Family Boraginaceae (click for list of genera only)
Myosotis L. *               forget-me-not, scorpion-grass (DISTRIBUTION MAP GALLERY of SPECIES)
Myosotis arvensis (L.) Hill * +               field forget-me-not, field scorpion-grass                  Myosotis scorpioides L. var. arvensis L.
Myosotis discolor Pers. * +               changing forget-me-not, yellow and blue scorpion-grass                  Myosotis versicolor Sm.
Myosotis scorpioides L. * +               common forget-me-not, forget-me-not, true forget-me-not, water scorpion-grass                  Myosotis palustris (L.) Hill
Myosotis stricta Link ex Roem. & Schult. * +               blue scorpion-grass, strict forget-me-not                  Myosotis micrantha Pall. ex Link
Myosotis verna Nutt. * +               early scorpion-grass, white forget-me-not                  Myosotis virginica auct. non (L.) Britton, Sterns & Poggenb.
Plagiobothrys figuratus (Piper) I.M.Johnst. ex M.Peck               [Excluded] fragrant popcorn-flower, scorpion-grass
Family Brassicaceae (click for list of genera only)
Draba L. *               whitlow-grass (DISTRIBUTION MAP GALLERY of SPECIES)
Draba arabisans Michx. * +               rock whitlow-grass                  Draba arabisans Michx. var. arabisans                  Draba arabisans Michx. var. superiorensis Butters & Abbe
Draba cana Rydb. * +               hoary whitlow-grass                  Draba breweri S.Watson var. cana (Rydb.) Rollins                  Draba lanceolata Royle                  Draba stylaris J.Gay ex W.D.J.Koch
Draba glabella Pursh               [Excluded] smooth whitlow-grass
Draba nemorosa L. var. leiocarpa Lindblom * +               woodland draba, woodland whitlow-grass                  Draba lutea Gilib.
Draba reptans (Lam.) Fernald * +               Carolina whitlow-grass, common whitlow-grass                  Draba caroliniana Walter                  Draba caroliniana Walter f. stellifera O.E.Schulz                  Draba micrantha Nutt.                  Draba reptans (Lam.) Fernald f. micrantha (Nutt.) C.L.Hitchc.                  Draba reptans (Lam.) Fernald f. reptans                  Draba reptans (Lam.) Fernald subsp. stellifera (O.E.Schulz) Abrams                  Draba reptans (Lam.) Fernald var. micrantha (Nutt.) Fernald                  Draba reptans (Lam.) Fernald var. reptans                  Draba reptans (Lam.) Fernald var. stellifera (O.E.Schulz) C.L.Hitchc.                  Draba reptans (Lam.) Fernald var. typica C.L.Hitchc.
Draba verna L. * +               spring whitlow-grass, vernal whitlow-grass                  Draba praecox Stev.                  Draba verna L. var. aestivalis Lej.                  Draba verna L. var. boerhaavii H.C.Hall                  Draba verna L. var. major Stur                  Erophila spathulata Láng                  Erophila verna (L.) Besser                  Erophila verna (L.) Besser subsp. praecox (Stev.) Walters                  Erophila verna (L.) Besser subsp. spathulata (Láng) Walters
Lepidium L. *               peppergrass, pepperwort, tongue-grass (DISTRIBUTION MAP GALLERY of SPECIES)
Lepidium densiflorum Schrad. * +               prairie pepper-weed, small peppergrass                  (for list of synonyms - see the varieties)
Lepidium densiflorum Schrad. var. densiflorum +               prairie pepper-weed, small peppergrass                  Lepidium apetulum auct. non Willd.                  Lepidium densiflorum Schrad. var. typicum Thell.                  Lepidium neglectum Thell.                  Lepidium texanum Buckley
Lepidium ruderale L. * +               fetid peppergrass, roadside pepper-weed, stinking pepper-weed
Lepidium virginicum L. var. virginicum * +               common peppergrass, poor-man's-pepper, Virginia pepper-weed                  Lepidium virginicum L. var. typicum C.L.Hitchc.
Family Caryophyllaceae (click for list of genera only)
Cerastium arvense L. * +               field chickweed, starry grasswort                  (for other synonyms - see the subspecies)                  Cerastium alsophilum Greene                  Cerastium angustatum Greene                  Cerastium arvense L. f. oblongifolium (Torr.) Pennell                  Cerastium arvense L. subsp. strictum (L.) Ugbor.                  Cerastium arvense L. var. angustifolium Fenzl                  Cerastium arvense L. var. arvense                  Cerastium arvense L. var. latifolium Fenzl                  Cerastium arvense L. var. purpurascens B.Boivin                  Cerastium arvense L. var. villosum (Muhl. ex Darl.) Hollick & Britton                  Cerastium arvense L. var. viscidulum Gremli                  Cerastium campestre Greene                  Cerastium confertum Greene                  Cerastium effusum Greene                  Cerastium elongatum Pursh                  Cerastium graminifolium Rydb.                  Cerastium latifolium Fenzl                  Cerastium nitidum Greene                  Cerastium oblongifolium Torr.                  Cerastium occidentale Greene                  Cerastium oreophilum Greene                  Cerastium patulum Greene                  Cerastium scopulorum Greene                  Cerastium sonnei Greene                  Cerastium strictum L.                  Cerastium subulatum Greene                  Cerastium tenuifolium Pursh                  Cerastium vestitum Greene                  Cerastium villosum Muhl. ex Darl.
Cerastium arvense L. subsp. arvense +               field chickweed, starry grasswort
Cerastium arvense L. subsp. velutinum (Raf.) Ugbor. var. velutinum * +               field chickweed, starry grasswort                  Cerastium arvense L. var. oblongifolium (Torr.) Hollick & Britton
Scleranthus L. *               knawel, knotgrass (DISTRIBUTION MAP GALLERY of SPECIES)
Scleranthus annuus L. * +               annual knawel, German knotgrass
Stellaria graminea L. * +               common stitchwort, grass-like starwort, starwort                  Alsine graminea (L.) Britton
Family Chenopodiaceae (click for list of genera only)
Atriplex littoralis L.               [Excluded] grass-leaved orache, seashore orache
Family Cyperaceae (click for list of genera only)
Carex jamesii Schwein. * +               grass sedge, James' sedge                  Carex steudelii Kunth
Cladium mariscoides (Muhl.) Torr. * +               smooth sawgrass, twig-rush                  Mariscus mariscoides (Muhl.) Kuntze                  Schoenus mariscoides Muhl.
Eriophorum L. *               bog-cotton, cotton-grass (DISTRIBUTION MAP GALLERY of SPECIES)
Eriophorum angustifolium Honck. subsp. angustifolium * +               cotton-grass                  Eriophorum angustifolium Honck. var. angustifolium                  Eriophorum polystachion auct. non L.
Eriophorum angustifolium Honck. subsp. scabriusculum Hultén               [Excluded] tall cotton-grass
Eriophorum chamissonis C.A.Mey. * +               Chamisso's cotton-grass, russet cotton-grass                  Eriophorum altaicum Meinsh. var. neogeum Raymond                  Eriophorum chamissonis C.A.Mey. f. albidum (F.Nyl.) Fernald                  Eriophorum chamissonis C.A.Mey. f. chamissonis                  Eriophorum chamissonis C.A.Mey. f. turneri Raymond                  Eriophorum chamissonis C.A.Mey. var. aquatile (Norman) Fernald                  Eriophorum rufescens Andersson                  Eriophorum russeolum Fr. f. leucothrix Blomgr.                  Eriophorum russeolum Fr. subsp. rufescens (Andersson) Hyl.                  Eriophorum russeolum Fr. var. albidum F.Nyl.                  Eriophorum russeolum Fr. var. leucothrix (Blomgr.) Hultén                  Eriophorum russeolum Fr. var. majus Sommier
Eriophorum gracile W.D.J.Koch ex Roth * +               slender cotton-grass
Eriophorum tenellum Nutt. * +               cotton-grass sedge, conifer cotton-grass, few-nerved cotton-grass                  Eriophorum tenellum Nutt. var. monticola Fernald
Eriophorum vaginatum L. * +               tussock cotton-grass                  Eriophorum callitrix auct. non Cham.                  Eriophorum spissum Fernald                  Eriophorum spissum Fernald var. erubescens (Fernald) Fernald                  Eriophorum vaginatum L. subsp. spissum (Fernald) Hultén                  Eriophorum vaginatum L. var. spissum (Fernald) B.Boivin
Eriophorum virginicum L. * +               rusty cotton-grass, tawny cotton-grass                  Eriophorum virginicum L. f. album (A.Gray) Wiegand                  Eriophorum virginicum L. f. virginicum
Eriophorum viridicarinatum (Engelm.) Fernald * +               dark-scale cotton-grass, tall cotton-grass                  Eriophorum latifolium Hoppe var. viridicarinatum Engelm.
Fuirena pumila (Torr.) Spreng. * +               dwarf umbrella-sedge, umbrella-grass                  Fuirena squarrosa Michx. var. pumila Torr.                  Fuirena torreyana Beck
Scirpus atrocinctus Fernald * +               black-girdled wool-grass                  Scirpus cyperinus (L.) Kunth var. brachypodus (Fernald) Gilly
Scirpus cyperinus (L.) Kunth * +               wool-grass                  Eriophorum cyperinum L.                  Scirpus cyperinus (L.) Kunth var. andrewsii (Fernald) Fernald                  Scirpus cyperinus (L.) Kunth var. condensatus Fernald                  Scirpus cyperinus (L.) Kunth var. cyperinus                  Scirpus cyperinus (L.) Kunth var. eriophorum (Michx.) Kuntze                  Scirpus cyperinus (L.) Kunth var. laxus (A.Gray) Beetle                  Scirpus cyperinus (L.) Kunth var. pelius Fernald                  Scirpus cyperinus (L.) Kunth var. pelius Fernald f. condensatus (Fernald) S.F.Blake                  Scirpus cyperinus (L.) Kunth var. rubricosus (Fernald) Gilly                  Scirpus eriophorum Michx.                  Scirpus rubricosus Fernald
Scirpus pedicellatus Fernald +               stalked wool-grass                  Scirpus cyperinus (L.) Kunth var. pedicellatus (Fernald) Schuyler                  Scirpus pedicellatus Fernald var. pullus Fernald
Scleria triglomerata Michx. * +               stone-rush, tall nut-rush, whip nut-rush, whip-grass                  Scleria flaccida Steud.                  Scleria nitida Willd.
Trichophorum Pers. *               alpine cotton-grass, alpine club-rush (DISTRIBUTION MAP GALLERY of SPECIES)
Trichophorum alpinum (L.) Pers. * +               alpine cotton-grass, alpine club-rush                  Baeothryon alpinum (L.) T.V.Egorova                  Eriophorum alpinum L.                  Eriophorum hudsonianum Michx.                  Leucocoma alpina (L.) Rydb.                  Scirpus alpinus (L.) Dalla Torre & Sarnth., 1906                  Scirpus hudsonianus (Michx.) Fernald                  Trichophorum alpinum (L.) Pers. var. hudsonianum (Michx.) Pers.
Family Hydrocharitaceae (click for list of genera only)
Vallisneria americana Michx. * +               American eelgrass, water-celery                  Vallisneria americana Michx. var. americana                  Vallisneria asiatica Michx.                  Vallisneria neotropicalis Vict.                  Vallisneria spiralis auct. non L.                  Vallisneria spiralis L. var. asiatica (Michx.) Torr.
Family Hypericaceae (click for list of genera only)
Hypericum gentianoides (L.) Britton, Sterns & Poggenb. * +               orange-grass, pine-weed                  Sarothra gentianoides L.
Family Iridaceae (click for list of genera only)
Sisyrinchium L. *               blue-eyed-grass (DISTRIBUTION MAP GALLERY of SPECIES)
Sisyrinchium albidum Raf. * +               common blue-eyed-grass, pale blue-eyed-grass, white blue-eyed-grass                  Sisyrinchium asheianum E.P.Bicknell                  Sisyrinchium bermudianum L. var. albidum (Raf.) A.Gray                  Sisyrinchium floridanum Raf.                  Sisyrinchium hastile E.P.Bicknell                  Sisyrinchium niveum Raf.                  Sisyrinchium scabrellum E.P.Bicknell
Sisyrinchium angustifolium Mill. * +               narrow-leaved blue-eyed-grass, pointed blue-eyed-grass, stout blue-eyed-grass                  Sisyrinchium bermudiana auct. non L.                  Sisyrinchium gramineum Curtis                  Sisyrinchium graminoides E.P.Bicknell
Sisyrinchium atlanticum E.P.Bicknell * +               eastern blue-eyed-grass                  Sisyrinchium apiculatum E.P.Bicknell                  Sisyrinchium apiculatum E.P.Bicknell var. mesochorum Nieuwl.                  Sisyrinchium corymbosum E.P.Bicknell                  Sisyrinchium flexile E.P.Bicknell                  Sisyrinchium mucronatum Michx. var. atlanticum (E.P.Bicknell) H.E.Ahles                  Sisyrinchium scoparium E.P.Bicknell                  Sisyrinchium tracyi E.P.Bicknell                  Sisyrinchium violaceum E.P.Bicknell
Sisyrinchium campestre E.P.Bicknell * +               prairie blue-eyed-grass                  Sisyrinchium campestre E.P.Bicknell f. flaviflorum (E.P.Bicknell) Steyerm.                  Sisyrinchium campestre E.P.Bicknell var. campestre                  Sisyrinchium campestre E.P.Bicknell var. kansanum E.P.Bicknell                  Sisyrinchium flaviflorum E.P.Bicknell                  Sisyrinchium kansanum (E.P.Bicknell) Alexander
Sisyrinchium montanum Greene * +               mountain blue-eyed-grass, strict blue-eyed grass                  (for list of synonyms - see the varieties)
Sisyrinchium montanum Greene var. crebrum Fernald +               mountain blue-eyed grass, strict blue-eyed grass                  Sisyrinchium bermudiana L. var. crebrum (Fernald) B.Boivin                  Sisyrinchium montanum Greene subsp. crebrum (Fernald) Böcher
Sisyrinchium montanum Greene var. montanum * +               mountain blue-eyed grass, strict blue-eyed grass                  Sisyrinchium montanum Greene subsp. montanum
Sisyrinchium mucronatum Michx. * +               needle-tip blue-eyed-grass                  Sisyrinchium angustifolium Michx. var. mucronatum (Michx.) Baker                  Sisyrinchium bermudiana L. var. mucronatum (Michx.) Baker                  Sisyrinchium intermedium E.P.Bicknell                  Sisyrinchium versicolor E.P.Bicknell
Sisyrinchium strictum E.P.Bicknell * +               mountain blue-eyed-grass
Family Juncaceae (click for list of genera only)
Juncus gerardii Loisel. * +               black-grass, salt-meadow rush
Juncus marginatus Rostk. * +               grass-leaved rush                  Juncus biflorus Elliott                  Juncus marginatus Rostk. var. biflorus (Elliott) Chapm.                  Juncus marginatus Rostk. var. odoratus Torr.                  Juncus marginatus Rostk. var. setosus Coville                  Juncus setosus (Coville) Small
Family Juncaginaceae (click for list of genera only)
Triglochin L. *               arrow-grass (DISTRIBUTION MAP GALLERY of SPECIES)
Triglochin maritima L. * +               arrow-grass, common bog arrow-grass, seaside arrow-grass                  Triglochin concinna Burtt Davy                  Triglochin concinna Burtt Davy var. debilis (M.E.Jones) J.T.Howell                  Triglochin debilis (M.E.Jones) A.Löve & D.Löve                  Triglochin elata Nutt.                  Triglochin maritimum L. var. elata (Nutt.) A.Gray
Triglochin palustris L. * +               marsh arrow-grass, slender bog arrow-grass
Family Liliaceae (click for list of genera only)
Aletris farinosa L. * +               unicorn root, white colic-root, white stargrass
Hypoxis hirsuta (L.) Coville * +               common gold-star, common star-grass, yellow star-grass                  Hypoxis carolinensis Michx.                  Hypoxis decumbens L.                  Hypoxis erecta L.                  Hypoxis graminea Pursh                  Hypoxis grandis Pollard                  Hypoxis micrantha Pollard                  Hypoxis pallida Salisb.                  Hypoxis villosa Raf.                  Ornithogalum hirsutum L.
Family Orchidaceae (click for list of genera only)
Calopogon R.Br. *               grass-pink (DISTRIBUTION MAP GALLERY of SPECIES)
Calopogon oklahomensis D.H.Goldman * +               Oklahoma grass pink
Calopogon tuberosus (L.) Britton, Sterns & Poggenb. var. tuberosus * +               grass pink, tuberous grass pink                  Calopogon pulchellus (Salisb.) R.Br.                  Calopogon pulchellus (Salisb.) R.Br. var. latifolius (H.St.John) Fernald                  Calopogon tuberosus (L.) Britton, Sterns & Poggenb. var. latifolius (H.St.John) B.Boivin                  Cathea pulchella Salisb.                  Cathea tuberosa (L.) Morong                  Cymbidium pulchellum (Salisb.) Sw.                  Helleborine tuberosa (L.) Kuntze                  Limodorum barbatum Lam.                  Limodorum pulchellum Salisb.                  Limodorum tuberosum L.                  Limodorum tuberosum L. var. nanum Nieuwl.
Family Plantaginaceae (click for list of genera only)
Plantago lanceolata L. * +               English plantain, narrow-leaved plantain, plantain, ribgrass                  Plantago altissima auct. non L.                  Plantago lanceolata L. var. angustifolia Poir.                  Plantago lanceolata L. var. sphaerostachya Mert. & W.D.J.Koch
Family Poaceae (click for list of genera only)
Achnatherum hymenoides (Roem. & Schult.) Barkworth *               [Excluded] Indian rice grass                  Eriocoma hymenoides (Roem. & Schult.) Rydb.                  Oryzopsis hymenoides (Roem. & Schult.) Ricker ex Piper                  Stipa hymenoides Roem. & Schult.
Agropyron desertorum (Fisch. ex Link) Schult. * +               desert wheat grass                  Agropyron cristatum (L.) Gaertn. subsp. desertorum (Fisch. ex Link) A.Löve                  Agropyron cristatum (L.) Gaertn. var. desertorum (Fisch. ex Link) Dorn                  Triticum desertorum Fisch. ex Link
Agrostis L. *               bent grass (DISTRIBUTION MAP GALLERY of SPECIES)
Agrostis capillaris L. *               [Excluded] colonial bent grass, Rhode Island bent grass                  Agrostis tenuis Sibth.
Agrostis hyemalis (Walter) Britton, Sterns & Poggenb. * +               southern hair grass, tickle grass, winter bent grass                  (for list of synonyms - see the varieties)
Agrostis hyemalis (Walter) Britton, Sterns & Poggenb. var. hyemalis +               southern hair grass, tickle grass, winter bent grass                  Agrostis antecedens E.P.Bicknell                  Cornucopiae hyemalis Walter
Agrostis hyemalis (Walter) Britton, Sterns & Poggenb. var. scabra (Willd.) Blomq. * +               rough bent grass, southern hair grass, tickle grass                  Agrostis hyemalis (Walter) Britton, Sterns & Poggenb. var. tenuis (Tuck.) Gleason                  Agrostis scabra Willd.                  Agrostis scabra Willd. var. scabra
Agrostis perennans (Walter) Tuck. var. perennans * +               autumn bent grass, thin grass, upland bent grass                  Agrostis oreophila Trin.                  Agrostis perennans (Walter) Tuck. var. aestivalis Vasey                  Agrostis schweinitzii Trin.                  Cornucopiae perennans Walter
Agrostis stolonifera L. * +               creeping bent grass, creeping tickle grass                  (for list of synonyms - see the varieties)
Agrostis stolonifera L. var. palustris (Huds.) Farw. +               creeping bent grass, creeping tickle grass                  Agrostis alba L. var. palustris (Huds.) Pers.                  Agrostis palustris Huds.                  Agrostis stolonifera L. var. compacta Hartm.
Agrostis stolonifera L. var. stolonifera * +               creeping bent grass, creeping tickle grass                  Agrostis alba L. var. stolonifera (L.) Sm.                  Agrostis maritima Lam.
Ammophila breviligulata Fernald * +               American beach-grass, dune grass, marram grass                  Ammophila champlainensis F.Seym.
Anthoxanthum odoratum L. * +               sweet vernal grass                  Anthoxanthum odoratum L. subsp. odoratum
Apera interrupta (L.) P.Beauv. * +               dense silkybent, silky bent grass                  Agrostis interrupta L.
Aristida basiramea Engelm. ex Vasey * +               fork-tip three-awn grass                  Aristida basiramea Engelm. ex Vasey var. basiramea
Aristida dichotoma Michx. * +               church-mouse three-awn, poverty grass, Shinners' three-awn, Shinners' three-awned grass                  (for list of synonyms - see the varieties)
Aristida dichotoma Michx. var. dichotoma +               church-mouse three-awn, poverty grass, Shinners' three-awn, Shinners' three-awned grass
Aristida longespica Poir. var. geniculata (Raf.) Fernald * +               Kearney's three-awn, red three-awn, slender three-awn, slim-spike three-awn grass                  Aristida geniculata Raf.                  Aristida intermedia Scribn. & Ball                  Aristida necopina Shinners
Aristida longespica Poir. var. longespica               [Excluded] slender three-awn, slim-spike three-awn grass                  Aristida gracilis Elliott
Aristida oligantha Michx. * +               old-field three-awn, plains three-awn grass
Aristida tuberculosa Nutt. * +               beach three-awn, dune three-awn grass, seaside three-awn
Arrhenatherum elatius (L.) P.Beauv. ex J.Presl & C.Presl var. elatius * +               tall oat grass                  Avena elatior L.
Avenula pubescens (Huds.) Dumort. * +               downy alpine oatgrass                  Avena pubescens Huds.                  Helictotrichon pubescens (Huds.) Besser ex Pilg.
Beckmannia syzigachne (Steud.) Fernald * +               American slough grass                  Beckmannia eruciformis auct. non (L.) Host                  Beckmannia eruciformis (L.) Host subsp. baicalensis (Kusn.) Hultén                  Beckmannia eruciformis (L.) Host var. uniflora Scribn. ex A.Gray                  Beckmannia syzigachne (Steud.) Fernald subsp. baicalensis (Kusn.) T.Koyama & Kawano                  Beckmannia syzigachne (Steud.) Fernald var. uniflora (Scribn. ex A.Gray) B.Boivin                  Panicum syzigachne Steud.
Bouteloua Lag. *               grama grass, mesquite grass (DISTRIBUTION MAP GALLERY of SPECIES)
Bouteloua gracilis (Kunth) Lag. ex Griffiths * +               blue grama, eyelash grass, graceful grama grass                  Bouteloua gracilis (Kunth) Lag. ex Griffiths var. stricta (Vasey) Hitchc.                  Bouteloua oligostachya (Nutt.) Torr. ex A.Gray                  Chondrosum gracile Willd. ex Kunth                  Chondrosum oligostachyum (Nutt.) Torr.
Bouteloua hirsuta Lag. subsp. hirsuta * +               hairy grama, hairy grama grass                  Bouteloua hirsuta Lag. var. hirsuta                  Chondrosum hirsutum (Lag.) Kunth
Brachyelytrum aristosum (Michx.) Trel. * +               bearded shorthusk, long-awned wood grass, northern shorthusk                  Brachyelytrum aristosum (Michx.) Trel. var. glabratum Vasey ex Millsp.                  Brachyelytrum erectum (Schreb. ex Spreng.) P.Beauv. var. glabratum (Vasey ex Millsp.) T.Koyama & Kawano                  Brachyelytrum erectum (Schreb. ex Spreng.) P.Beauv. var. septentrionale Babel                  Brachyelytrum septentrionale (Babel) G.C.Tucker
Brachyelytrum erectum (Schreb. ex Spreng.) P.Beauv. * +               bearded shorthusk, long-awned wood grass                  Brachyelytrum erectum (Schreb. ex Spreng.) P.Beauv. var. erectum
Briza maxima L. *               [Excluded] big quaking grass
Bromus L. *               brome grass, chess (DISTRIBUTION MAP GALLERY of SPECIES)
Bromus secalinus L. * +               brome grass, cheat, chess, rye brome                  Bromus secalinus L. var. hirsutus Kindb.                  Bromus secalinus L. var. hirtus (F.W.Schultz) Hegi
Bromus tectorum L. * +               cheat grass, downy brome, downy chess, June grass                  (for list of synonyms - see the varieties)
Bromus tectorum L. var. glabratus Spenn. * +               cheat grass, downy brome, downy chess, June grass                  Bromus tectorum L. var. nudus Klett & Richter
Bromus tectorum L. var. tectorum +               cheat grass, downy brome, downy chess, June grass
Buchloe dactyloides (Nutt.) Engelm. * +               buffalo grass                  Bulbilis dactyloides (Nutt.) Raf. ex Kuntze                  Sesleria dactyloides Nutt.
Calamagrostis Adans. *               reed grass (DISTRIBUTION MAP GALLERY of SPECIES)
Calamagrostis canadensis (Michx.) P.Beauv. * +               blue-joint grass                  (for list of synonyms - see the varieties)
Calamagrostis canadensis (Michx.) P.Beauv. var. canadensis +               big reed grass, blue-joint grass                  Calamagrostis anomala Suksd.                  Calamagrostis atropurpurea Nash                  Calamagrostis canadensis (Michx.) P.Beauv. var. acuminata Vasey ex Shear & Rydb.                  Calamagrostis canadensis (Michx.) P.Beauv. var. pallida (Vasey & Scribn.) Stebbins                  Calamagrostis canadensis (Michx.) P.Beauv. var. robusta Vasey                  Calamagrostis canadensis (Michx.) P.Beauv. var. typica Stebbins                  Calamagrostis expansa Rickett & Gilly var. robusta (Vasey) Stebbins                  Calamagrostis inexpansa A.Gray var. cuprea Kearney                  Calamagrostis inexpansa A.Gray var. robusta (Vasey) Stebbins
Calamagrostis canadensis (Michx.) P.Beauv. var. macouniana (Vasey) Stebbins +               Macoun's blue-joint, Macoun's reed grass                  Calamagrostis macouniana (Vasey) Vasey
Calamagrostis epigeios (L.) Roth * +               Chee reed grass, feathertop
Calamagrostis stricta (Timm) Koeler * +               slim-stem reed grass, slim-stem small reed grass                  (for list of synonyms - see the subspecies)
Calamagrostis stricta (Timm) Koeler subsp. inexpansa (A.Gray) C.W.Greene * +               New England northern reed grass, northern reed grass, slim-stem reed grass                  Calamagrostis californica Kearney                  Calamagrostis chordorrhiza Porsild                  Calamagrostis expansa Rickett & Gilly                  Calamagrostis fernaldii Louis-Marie                  Calamagrostis hyperborea Lange var. americana (Vasey) Kearney                  Calamagrostis hyperborea Lange var. elongata Kearney                  Calamagrostis hyperborea Lange var. stenodes Kearney                  Calamagrostis inexpansa A.Gray                  Calamagrostis inexpansa A.Gray var. barbulata Kearney                  Calamagrostis inexpansa A.Gray var. brevior (Vasey) Stebbins                  Calamagrostis inexpansa A.Gray var. novae-angliae Stebbins                  Calamagrostis labradorica Kearney                  Calamagrostis lacustris (Kearney) Nash                  Calamagrostis lapponica (Wahlenb.) Hartm. var. brevipilis Stebbins                  Calamagrostis pickeringii A.Gray var. lacustris (Kearney) Hitchc.                  Calamagrostis scopulorum M.E.Jones var. bakeri Stebbins                  Calamagrostis stricta (Timm) Koeler var. brevior Vasey                  Calamagrostis stricta (Timm) Koeler var. lacustris (Kearney) C.W.Greene
Calamagrostis stricta (Timm) Koeler subsp. stricta var. stricta +               slim-stem reed grass, slim-stem small reed grass                  Calamagrostis neglecta Gaertn., B.Mey. & Scherb.                  Calamagrostis neglecta Gaertn., B.Mey. & Scherb. subsp. stricta (Timm) Tzvelev                  Calamagrostis neglecta Gaertn., B.Mey. & Scherb. var. gracilis (Scribn.) Scribn.                  Calamagrostis neglecta Gaertn., B.Mey. & Scherb. var. micrantha (Kearney) Stebbins
Calamovilfa longifolia (Hook.) Scribn. var. magna Scribn. & Merr. * +               prairie sand-reed, sand-reed grass
Catabrosa aquatica (L.) P.Beauv. * +               brook grass, water whorl-grass                  Aira aquatica L.                  Catabrosa aquatica (L.) P.Beauv. var. aquatica                  Catabrosa aquatica (L.) P.Beauv. var. uniflora S.F.Gray
Crypsis schoenoides (L.) Lam. * +               false-timothy, pickle grass, swamp pickle grass                  Heleochloa schoenoides (L.) Host ex Roem.
Cynosurus cristatus L. * +               crested dog's-tail grass, dog's-tail
Dactylis glomerata L. * +               orchard grass
Danthonia compressa Austin * +               flattened oatgrass                  Danthonia allenii Austin
Danthonia spicata (L.) P.Beauv. ex Roem. & Schult. * +               poverty danthonia, poverty grass, poverty oat grass                  Danthonia spicata (L.) P.Beauv. ex Roem. & Schult. var. longipila Scribn. & Merr.                  Danthonia spicata (L.) P.Beauv. ex Roem. & Schult. var. pinetorum Piper                  Danthonia thermalis Scribn.
Deschampsia P.Beauv. *               hair grass (DISTRIBUTION MAP GALLERY of SPECIES)
Deschampsia cespitosa (L.) P.Beauv. * +               small-flowered tickle grass, tufted hair grass                  (for other synonyms - see the subspecies)                  Deschampsia caespitosa (L.) P.Beauv. [orthographic variant]
Deschampsia cespitosa (L.) P.Beauv. subsp. cespitosa * +               small-flowered tickle grass, tufted hair grass                  Aira cespitosa L.                  Deschampsia cespitosa (L.) P.Beauv. subsp. genuina (Rchb.) Volk.                  Deschampsia cespitosa (L.) P.Beauv. var. abbei B.Boivin                  Deschampsia cespitosa (L.) P.Beauv. var. alpicola (Rydb.) A.Löve, D.Löve & Kapoor                  Deschampsia cespitosa (L.) P.Beauv. var. genuina Gren. & Godr.                  Deschampsia cespitosa (L.) P.Beauv. var. intercotidalis B.Boivin                  Deschampsia cespitosa (L.) P.Beauv. var. littoralis (Gaudin) K.Richt.                  Deschampsia cespitosa (L.) P.Beauv. var. longiflora Beal                  Deschampsia cespitosa (L.) P.Beauv. var. maritima Vasey
Deschampsia cespitosa (L.) P.Beauv. subsp. glauca (Hartm.) Hartm. +               tufted hair grass                  Deschampsia cespitosa (L.) P.Beauv. var. glauca (Hartm.) Lindm., non Regel                  Deschampsia glauca Hartm.
Deschampsia cespitosa (L.) P.Beauv. subsp. parviflora (Thuill.) Jarm. & Soó +               tufted hair grass                  Deschampsia cespitosa (L.) P.Beauv. var. parviflora (Thuill.) Coss. & Germ.
Deschampsia flexuosa (L.) Trin. * +               crinkled hair grass, wavy hair grass                  Aira flexuosa L.                  Lerchenfeldia flexuosa (L.) Schur
Desmazeria rigida (L.) Tutin *               [Excluded] fern grass                  Catapodium rigidum (L.) C.E.Hubb. ex Dony                  Poa rigida L.                  Scleropoa rigida (L.) Griseb.
Diarrhena americana P.Beauv. (sensu stricto)               [Excluded] American beak grain, beak grass
Dichanthelium *               rosette grass (DISTRIBUTION MAP GALLERY of SPECIES)
Dichanthelium acuminatum (Sw.) Gould & C.A.Clark * +               hairy panic grass                  (for other synonyms - see the subspecies)                  Panicum acuminatum Sw.                  Panicum acuminatum Sw. X P. columbianum Scribn.                  Panicum lanuginosum Elliott, non Bosc ex Spreng.
Dichanthelium acuminatum (Sw.) Gould & C.A.Clark subsp. columbianum (Scribn.) Freckmann & Lelong * +               hemlock panic grass                  Dichanthelium columbianum (Scribn.) Freckmann                  Dichanthelium sabulorum (Lam.) Gould & C.A.Clark var. thinium (Hitchc. & Chase) Gould & C.A.Clark                  Panicum acuminatum Sw. var. columbianum (Scribn.) Lelong                  Panicum columbianum Scribn.                  Panicum heterophyllum Bosc ex Nees                  Panicum sabulorum Lam. var. thinium (Hitchc. & Chase) C.F.Reed                  Panicum tsugetorum Nash                  Panicum unciphyllum Trin. var. thinium Hitchc. & Chase
Dichanthelium acuminatum (Sw.) Gould & C.A.Clark subsp. fasciculatum (Torr.) Freckmann & Lelong * +               western panic grass                  Dichanthelium acuminatum (Sw.) Gould & C.A.Clark var. fasciculatum (Torr.) Freckmann                  Dichanthelium lanuginosum (Elliott) Gould var. fasciculatum (Torr.) Spellenb.                  Panicum acuminatum Sw. var. fasciculatum (Torr.) Lelong                  Panicum brodiei H.St.John                  Panicum glutinoscabrum Fernald                  Panicum huachucae Ashe                  Panicum huachucae Ashe var. fasciculatum (Torr.) F.T.Hubb.                  Panicum languidum Hitchc.                  Panicum lanuginosum Elliott, non Bosc ex Spreng. var. fasciculatum (Torr.) Fernald                  Panicum lanuginosum Elliott, non Bosc ex Spreng. var. huachucae (Ashe) Hitchc.                  Panicum lanuginosum Elliott, non Bosc ex Spreng. var. septentrionale (Fernald) Fernald                  Panicum lanuginosum Elliott, non Bosc ex Spreng. var. tennesseense (Ashe) Gleason                  Panicum lassenianum Schmoll                  Panicum lindheimeri Nash var. fasciculatum (Torr.) Fernald                  Panicum occidentale Scribn.                  Panicum pacificum Hitchc. & Chase                  Panicum subvillosum Ashe                  Panicum tennesseense Ashe
Dichanthelium acuminatum (Sw.) Gould & C.A.Clark subsp. implicatum (Scribn. ex Nash) Freckmann & Lelong * +               mat panic grass                  Dichanthelium acuminatum (Sw.) Gould & C.A.Clark var. implicatum (Scribn.) Gould & C.A.Clark                  Dichanthelium meridionale (Ashe) Freckmann                  Panicum acuminatum Sw. var. implicatum (Scribn.) C.F.Reed                  Panicum albemarlense Ashe                  Panicum columbianum Scribn. var. oricola (Hitchc. & Chase) Fernald                  Panicum columbianum Scribn. var. thinium Hitchc. & Chase                  Panicum heterophyllum Bosc ex Nees var. thinium (Hitchc. & Chase) F.T.Hubb.                  Panicum implicatum Scribn.                  Panicum lanuginosum Elliott, non Bosc ex Spreng. var. implicatum (Scribn.) Fernald                  Panicum leucothrix Nash, sensu Gleason & Cronquist (1991)                  Panicum meridionale Ashe                  Panicum meridionale Ashe var. albemarlense (Ashe) Fernald                  Panicum oricola Hitchc. & Chase
Dichanthelium acuminatum (Sw.) Gould & C.A.Clark subsp. lindheimeri (Nash) Freckmann & Lelong * +               Lindheimer's panic grass                  Dichanthelium acuminatum (Sw.) Gould & C.A.Clark var. lindheimeri (Nash) Gould & C.A.Clark                  Dichanthelium lanuginosum (Elliott) Gould var. lindheimeri (Nash) Fernald                  Dichanthelium lindheimeri (Nash) Gould                  Panicum acuminatum Sw. var. lindheimeri (Nash) Lelong                  Panicum lanuginosum Elliott, non Bosc ex Spreng. var. lindheimeri (Nash) Fernald                  Panicum lindheimeri Nash
Dichanthelium boreale (Nash) Freckmann * +               northern panic grass                  Panicum bicknellii Nash                  Panicum bicknellii Nash var. bushii (Nash) Farw.                  Panicum boreale Nash                  Panicum boreale Nash var. michiganense Farw.                  Panicum bushii Nash                  Panicum calliphyllum Ashe
Dichanthelium clandestinum (L.) Gould * +               deer-tongue grass
Dichanthelium depauperatum (Muhl.) Gould * +               poverty panic grass, starved panic grass                  Panicum depauperatum Muhl.                  Panicum depauperatum Muhl. var. depauperatum                  Panicum depauperatum Muhl. var. involutum (Torr.) A.W.Wood                  Panicum depauperatum Muhl. var. psilophyllum Fernald                  Panicum strictum Pursh var. psilophyllum (Fernald) Farw.
Dichanthelium dichotomum (L.) Gould * +               forked panic grass                  Panicum barbulatum Michx.                  Panicum caerulescens Hack. ex Hitchc.                  Panicum dichotomum L.                  Panicum dichotomum L. var. barbulatum (Michx.) A.W.Wood
Dichanthelium latifolium (L.) Harvill * +               broad-leaved panic grass                  Panicum latifolium L.                  Panicum macrocarpon Leconte ex Torr.
Dichanthelium leibergii (Vasey) Freckmann * +               Leiberg's panic grass, prairie panic grass                  Panicum leibergii (Vasey) Scribn.                  Panicum scoparium Lam. var. leibergii Vasey                  Panicum scribnerianum Nash var. leibergii (Vasey) Scribn.
Dichanthelium linearifolium (Scribn.) Gould * +               linear-leaved panic grass, slender-leaved panic grass                  Dichanthelium linearifolium (Scribn.) Gould var. werneri (Scribn.) Mohlenbr.                  Panicum linearifolium Scribn.                  Panicum linearifolium Scribn. var. linearifolium                  Panicum linearifolium Scribn. var. werneri (Scribn.) Fernald                  Panicum strictum Pursh var. linearifolium (Scribn.) Farw.                  Panicum werneri Scribn.
Dichanthelium oligosanthes (Schult.) Gould subsp. oligosanthes               [Excluded] Heller's rosette grass                  Dichanthelium oligosanthes (Schult.) Gould var. oligosanthes                  Panicum oligosanthes Schult. var. oligosanthes
Dichanthelium oligosanthes (Schult.) Gould subsp. scribnerianum (Nash) Freckmann & Lelong * +               few-flowered panic grass, Scribner's panic grass, Scribner's rosette grass                  Dichanthelium oligosanthes (Schult.) Gould var. helleri (Nash) Mohlenbr.                  Dichanthelium oligosanthes (Schult.) Gould var. scribnerianum (Nash) Gould                  Panicum helleri Nash                  Panicum oligosanthes Schult. var. helleri (Nash) Fernald                  Panicum oligosanthes Schult. var. scribnerianum (Nash) Fernald                  Panicum scoparium S.Watson ex Nash, non Lam.                  Panicum scribnerianum Nash
Dichanthelium ovale (Elliott) Gould & C.A.Clark * +               stiff-leaved panic grass                  (for other synonyms - see the subspecies)                  Panicum malacon Nash                  Panicum ovale Elliott
Dichanthelium ovale (Elliott) Gould & C.A.Clark subsp. praecocius (Hitch. & Chase) Freckmann & Lelong * +               stiff-leaved panic grass                  Dichanthelium villosissimum (Nash) Freckmann var. praecocius (Hitchc. & Chase) Freckmann                  Panicum lanuginosum Elliott, non Bosc ex Spreng. var. praecocius (Hitchc. & Chase) McNeill & Dore                  Panicum praecocius Hitchc. & Chase
Dichanthelium ovale (Elliott) Gould & C.A.Clark subsp. pseudopubescens (Nash) Freckmann & Lelong * +               stiff-leaved panic grass                  Dichanthelium commonsianum (Ashe) Freckmann                  Dichanthelium commonsianum (Ashe) Freckmann var. euchlamydeum (Shinners) Freckmann                  Dichanthelium ovale (Elliott) Gould & C.A.Clark var. addisonii (Nash) Gould & C.A.Clark                  Dichanthelium villosissimum (Nash) Freckmann var. pseudopubescens (Nash) Mohlenbr.                  Panicum addisonii Nash                  Panicum alabamense Ashe                  Panicum columbianum Scribn. var. commonsianum (Ashe) McNeill & Dore                  Panicum commonsianum Ashe                  Panicum commonsianum Ashe var. addisonii (Nash) R.W.Pohl                  Panicum commonsianum Ashe var. addisonii (Nash) Fernald                  Panicum commonsianum Ashe var. commonsianum                  Panicum commonsianum Ashe var. euchlamydeum (Shinners) R.W.Pohl                  Panicum euchlamydeum Shinners                  Panicum mundum Fernald                  Panicum ovale Elliott var. addisonii (Nash) C.F.Reed                  Panicum ovale Elliott var. pseudopubescens (Nash) Lelong                  Panicum owenae E.P.Bicknell                  Panicum pseudopubescens Nash                  Panicum villosissimum Nash var. pseudopubescens (Nash) Fernald                  Panicum wilmingtonense Ashe
Dichanthelium perlongum (Nash) Freckmann * +               long-stalked panic grass                  Dichanthelium depauperatum (Muhl.) Gould var. perlongum (Nash) B.Boivin                  Panicum perlongum Nash                  Panicum strictum Pursh var. perlongum (Nash) Farw.
Dichanthelium sabulorum (Lam.) Gould & C.A.Clark               [Excluded] Hemlock rosette grass
Dichanthelium wilcoxianum (Vasey) Freckmann * +               Wilcox's panic grass                  Dichanthelium oligosanthes (Schult.) Gould var. wilcoxianum (Vasey) Gould & C.A.Clark                  Panicum wilcoxianum Vasey                  Panicum wilcoxianum Vasey var. breitungii B.Boivin
Dichanthelium xanthophysum (A.Gray) Freckmann * +               pale panic grass, slender rosette grass                  Panicum leibergii (Vasey) Scribn. var. baldwinii Lepage                  Panicum xanthophysum A.Gray
Digitaria Haller *               crabgrass (DISTRIBUTION MAP GALLERY of SPECIES)
Digitaria cognata (Schult.) Pilg. subsp. cognata * +               fall witch grass                  Digitaria cognata (Schult.) Pilg. var. cognata                  Leptoloma cognatum (Schult.) Chase                  Panicum cognatum Schult.
Digitaria ischaemum (Schreb.) Muhl. * +               smooth crabgrass                  Digitaria humifusa Pers.                  Digitaria ischaemum (Schreb.) Muhl. var. ischaemum                  Digitaria ischaemum (Schreb.) Muhl. var. mississippiensis (Gatt.) Fernald                  Panicum ischaemum Schreb.                  Syntherisma ischaemum (Schreb.) Nash
Digitaria longiflora (Retz.) Pers.               [Excluded] Indian crabgrass
Digitaria sanguinalis (L.) Scop. * +               hairy crabgrass, northern crabgrass                  Panicum sanguinale L.                  Syntherisma sanguinalis (L.) Dulac
Distichlis spicata (L.) Greene * +               alkali grass, inland salt grass, spike grass                  Distichlis spicata (L.) Greene subsp. stricta (Torr.) Thorne                  Distichlis spicata (L.) Greene var. borealis (J.Presl) Beetle                  Distichlis spicata (L.) Greene var. divaricata Beetle                  Distichlis spicata (L.) Greene var. nana Beetle                  Distichlis spicata (L.) Greene var. spicata                  Distichlis spicata (L.) Greene var. stolonifera Beetle                  Distichlis spicata (L.) Greene var. stricta (Torr.) Beetle                  Distichlis stricta (Torr.) Rydb.                  Distichlis stricta (Torr.) Rydb. var. dentata (Rydb.) C.L.Hitchc.                  Uniola spicata L.
Echinochloa P.Beauv. *               cup grass (DISTRIBUTION MAP GALLERY of SPECIES)
Echinochloa crus-galli (L.) P.Beauv. * +               barnyard grass, large barnyard grass                  Echinochloa crus-galli (L.) P.Beauv. subsp. crus-galli                  Echinochloa crus-galli (L.) P.Beauv. var. crus-galli                  Echinochloa crus-galli (L.) P.Beauv. var. mitis (Pursh) Peterm.                  Echinochloa muricata (P.Beauv.) Fernald var. occidentalis Wiegand                  Echinochloa occidentalis (Wiegand) Rydb.                  Echinochloa pungens (Poir.) Rydb. var. coarctata Fernald & Griscom                  Panicum crus-galli L.
Echinochloa muricata (P.Beauv.) Fernald * +               American barnyard grass, barnyard grass, cockspur grass, rough barnyard grass                  (for list of synonyms - see the varieties)
Echinochloa muricata (P.Beauv.) Fernald var. microstachya Wiegand * +               rough barnyard grass                  Echinochloa microstachya (Wiegand) Rydb.                  Echinochloa muricata (P.Beauv.) Fernald var. wiegandii Fassett                  Echinochloa pungens (Poir.) Rydb. var. microstachya (Wiegand) Fernald & Griscom                  Echinochloa pungens (Poir.) Rydb. var. multiflora (Wiegand) Fernald & Griscom                  Echinochloa pungens (Poir.) Rydb. var. wiegandii Fassett                  Echinochloa wiegandii (Fassett) McNeill & Dore
Echinochloa muricata (P.Beauv.) Fernald var. muricata * +               barnyard grass, cockspur grass, rough barnyard grass                  Echinochloa crus-galli (L.) P.Beauv. f. longiseta (Trin.) Farw.                  Echinochloa muricata (P.Beauv.) Fernald var. ludoviciana Wiegand                  Echinochloa pungens (Poir.) Rydb.                  Echinochloa pungens (Poir.) Rydb. var. ludoviciana (Wiegand) Fernald & Griscom
Echinochloa walteri (Pursh) A.Heller * +               coast barnyard grass, salt-marsh cockspur grass, water-millet                  Echinochloa walteri (Pursh) A.Heller f. laevigata Wiegand                  Panicum walteri Pursh
Eleusine indica (L.) Gaertn. * +               crowfoot grass, Indian goose grass, yard grass                  Cynosurus indicus L.
Elymus L. *               lyme grass, wild-rye (DISTRIBUTION MAP GALLERY of SPECIES)                  Agropyron Gaertn.
Elymus hystrix L. * +               bottlebrush grass, eastern bottlebrush grass, glumeless wild-rye                  (for list of synonyms - see the varieties)
Elymus hystrix L. var. bigeloviana (Fernald) Bowden +               Bigelow's bottlebrush grass, eastern bottlebrush grass                  Asperella hystrix (L.) Humb. var. bigeloviana Fernald                  Elymus hystrix L. f. bigelovianus (Fernald) Dore                  Hystrix patula Moench f. bigeloviana (Fernald) Gleason                  Hystrix patula Moench var. bigeloviana (Fernald) Deam
Elymus hystrix L. var. hystrix * +               bottlebrush grass, eastern bottlebrush grass, glumeless wild-rye                  Asperella hystrix (L.) Humb.                  Hystrix hystrix (L.) Millsp.                  Hystrix patula Moench
Elymus trachycaulus (Link) Gould ex Shinners * +               slender wheat grass                  (for list of synonyms - see the subspecies)
Elymus trachycaulus (Link) Gould ex Shinners subsp. subsecundus (Link) A.Löve & D.Löve * +               bearded wheat grass, slender wheat grass                  Agropyron caninum (L.) P.Beauv. var. unilaterale (Cassidy) C.L.Hitchc.                  Agropyron pauciflorum (Schwein.) Hitchc. ex Silvues var. glaucum (Pease & A.H.Moore) Taylor                  Agropyron subsecundum (Link) Hitchc.                  Agropyron trachycaulum (Link) Malte ex H.F.Lewis var. ciliatum (Scribn. & J.G.Sm.) Malte                  Agropyron trachycaulum (Link) Malte ex H.F.Lewis var. glaucum (Pease & A.H.Moore) Malte                  Agropyron trachycaulum (Link) Malte ex H.F.Lewis var. unilaterale (Cassidy) Malte                  Elymus trachycaulus (Link) Gould ex Shinners subsp. glaucus (Pease & A.H.Moore) Cody                  Elymus trachycaulus (Link) Gould ex Shinners var. unilateralis (Cassidy) Beetle                  Triticum subsecundum Link
Elymus trachycaulus (Link) Gould ex Shinners subsp. trachycaulus * +               slender wheat grass                  Agropyron brevifolium Scribn.                  Agropyron caninum (L.) P.Beauv. subsp. majus (Vasey) C.L.Hitchc.                  Agropyron caninum (L.) P.Beauv. var. andinum (Scribn. & J.G.Sm.) Pease & A.H.Moore                  Agropyron caninum (L.) P.Beauv. var. hornemannii (Koch) Pease & A.H.Moore                  Agropyron caninum (L.) P.Beauv. var. mitchellii Welsh                  Agropyron pauciflorum (Schwein.) Hitchc. ex Silvues                  Agropyron pauciflorum (Schwein.) Hitchc. ex Silvues subsp. majus (Vasey) Melderis                  Agropyron pauciflorum (Schwein.) Hitchc. ex Silvues subsp. novae-angliae (Scribn.) Melderis                  Agropyron pauciflorum (Schwein.) Hitchc. ex Silvues subsp. teslinense (Porsild & Senn) Melderis                  Agropyron pauciflorum (Schwein.) Hitchc. ex Silvues var. novae-angliae (Scribn.) Roy L.Taylor & MacBryde                  Agropyron subsecundum (Link) Hitchc. var. andinum (Scribn. & J.G.Sm.) Hitchc.                  Agropyron tenerum Vasey                  Agropyron teslinense Porsild & Senn                  Agropyron trachycaulum (Link) Malte ex H.F.Lewis                  Agropyron trachycaulum (Link) Malte ex H.F.Lewis var. majus (Vasey) Fernald                  Agropyron trachycaulum (Link) Malte ex H.F.Lewis var. novae-angliae (Scribn.) Fernald                  Agropyron trachycaulum (Link) Malte ex H.F.Lewis var. trachycaulum                  Agropyron violaceum (Hornem.) Lange subsp. andinum (Scribn. & J.G.Sm.) Melderis                  Agropyron violaceum (Hornem.) Lange var. andinum Scribn. & J.G.Sm.                  Elymus pauciflorus (Schwein.) Gould, non Lam.                  Elymus trachycaulus (Link) Gould ex Shinners subsp. andinus (Scribn. & J.G.Sm.) A.Löve & D.Löve                  Elymus trachycaulus (Link) Gould ex Shinners subsp. novae-angliae (Scribn.) Tzvelev                  Elymus trachycaulus (Link) Gould ex Shinners subsp. teslinensis (Porsild & Senn) A.Löve                  Elymus trachycaulus (Link) Gould ex Shinners var. andinus (Scribn. & J.G.Sm.) Dorn                  Elymus trachycaulus (Link) Gould ex Shinners var. majus (Vasey) Beetle                  Roegneria pauciflora (Schwein.) Hyl.                  Roegneria trachycaula (Link) Nevski                  Triticum trachycaulum Link
Elytrigia Desv. *               wheat grass (DISTRIBUTION MAP GALLERY of SPECIES)                  Agropyron Gaertn.
Elytrigia dasystachya (Hook.) A.Löve & D.Löve * +               thick-spike wheat grass                  (for list of synonyms - see the subspecies)
Elytrigia dasystachya (Hook.) A.Löve & D.Löve subsp. dasystachya * +               thick-spike wheat grass                  Agropyron dasystachyum (Hook.) Scribn.                  Agropyron dasystachyum (Hook.) Scribn. var. riparum (Scribn. & J.G.Sm.) Bowden                  Agropyron elmeri Scribn.                  Agropyron lanceolatum Scribn. & J.G.Sm.                  Agropyron riparum Scribn. & J.G.Sm.                  Agropyron riparium Scribn.& J.G.Sm.                  Elytrigia dasystachya (Hook.) A.Löve & D.Löve var. dasystachya                  Elymus lanceolatus (Scribn. & J.G.Sm.) Gould                  Elymus lanceolatus (Scribn. & J.G.Sm.) Gould subsp. lanceolatus                  Elymus lanceolatus (Scribn. & J.G.Sm.) Gould var. riparius (Scribn. & J.G.Sm.) Dorn                  Elytrigia riparia (Scribn. & J.G.Sm.) Beetle
Elytrigia dasystachya (Hook.) A.Löve & D.Löve subsp. psammophila (J.M.Gillett & Senn) Dewey * +               streambank wheat grass, thick-spike wheat grass                  Agropyron dasystachyum (Hook.) Scribn. subsp. psammophilum (J.M.Gillett & Senn) Dewey                  Agropyron dasystachyum (Hook.) Scribn. var. psammophilum (J.M.Gillett & Senn) E.G.Voss                  Agropyron psammophilium J.M.Gillett & Senn                  Elytrigia dasystachya (Hook.) A.Löve & D.Löve var. psammophila (J.M.Gillett & Senn) Cronquist                  Elymus lanceolatus (Scribn. & J.G.Sm.) Gould subsp. psammophilus (J.M.Gillett & Senn) A.Löve
Elytrigia repens (L.) Desv. ex B.D.Jacks. * +               couchgrass, creeping quackgrass, quackgrass                  Agropyron acadiense F.T.Hubb.                  Agropyron repens (L.) P.Beauv.                  Agropyron repens (L.) P.Beauv. var. repens                  Agropyron repens (L.) P.Beauv. var. repens f. aristatum (Schumach.) Holmb.                  Agropyron repens (L.) P.Beauv. var. repens f. pilosum (Scribn.) Fernald                  Agropyron repens (L.) P.Beauv. var. repens f. trichorrhachis Rohlena                  Agropyron repens (L.) P.Beauv. var. subulatum (Schreb.) Roem. & Schult.                  Agropyron repens (L.) P.Beauv. var. subulatum (Schreb.) Roem. & Schult. f. setiferum Fernald                  Agropyron repens (L.) P.Beauv. var. subulatum (Schreb.) Roem. & Schult. f. heberhachis Fernald                  Agropyron repens (L.) P.Beauv. var. subulatum (Schreb.) Roem. & Schult. f. subulatum                  Agropyron repens (L.) P.Beauv. var. subulatum (Schreb.) Roem. & Schult. f. vaillantianum (Wulfen & Schreb.) Fernald                  Elymus repens (L.) Gould                  Elytrigia repens (L.) Desv. ex B.D.Jacks. var. repens                  Elytrigia repens (L.) Desv. ex B.D.Jacks. var. vaillantiana (Wulfen & Schreb.) Prokudin                  Triticum repens L.
Elytrigia smithii (Rydb.) Nevski * +               western wheat grass                  Agropyron molle (Scribn. & J.G.Sm.) Rydb.                  Agropyron smithii Rydb.                  Agropyron smithii Rydb. var. molle (Scribn. & J.G.Sm.) M.E.Jones                  Agropyron smithii Rydb. var. palmeri (Scribn. & J.G.Sm.) A.Heller                  Elymus smithii (Rydb.) Gould                  Elytrigia smithii (Rydb.) Nevski var. molle (Scribn. & J.G.Sm.) Beetle                  Pascopyrum smithii (Rydb.) A.Löve
Elytrigia spicata (Pursh) D.R.Dewey               [Excluded] bluebunch wheat grass                  Pseudoroegneria spicata (Pursh) A.Löve subsp. spicata
Eragrostis Wolf *               love grass (DISTRIBUTION MAP GALLERY of SPECIES)
Eragrostis capillaris (L.) Nees * +               lace grass
Eragrostis cilianensis (All.) Vignolo ex Janch. * +               stink grass                  Eragrostis major Host                  Eragrostis megastachya (Koeler) Link                  Poa cilianensis All.
Eragrostis frankii C.A.Mey. ex Steud. * +               sandbar love grass                  Eragrostis frankii C.A.Mey. ex Steud. var. brevipes Fassett
Eragrostis hypnoides (Lam.) Britton, Sterns & Poggenb. * +               creeping love grass, teal love grass                  Poa hypnoides Lam.
Eragrostis mexicana (Hornem.) Link subsp. mexicana * +               Mexican love grass, New Mexico love grass                  Eragrostis neomexicana Vasey                  Poa mexicana Hornem.
Eragrostis minor Host * +               little love grass                  Eragrostis eragrostis (L.) P.Beauv.                  Eragrostis poaeoides P.Beauv.
Eragrostis pectinacea (Michx.) Nees var. pectinacea * +               Carolina love grass, low love grass, small love grass, tufted love grass                  Eragrostis caroliniana (Biehler) Scribn.                  Eragrostis diffusa Buckley                  Eragrostis purshii hort. ex Schrad.                  Poa pectinacea Michx.
Eragrostis pilosa (L.) P.Beauv. var. pilosa * +               Indian love grass                  Eragrostis multicaulis Steud.                  Eragrostis peregrina Wiegand                  Poa pilosa L.
Eragrostis spectabilis (Pursh) Steud. * +               purple love grass, tumble grass                  Eragrostis spectabilis (Pursh) Steud. var. sparsihirsuta Farw.                  Poa spectabilis Pursh
Eragrostis trichodes (Nutt.) A.W.Wood * +               sand love grass, tall love grass
Eriochloa villosa (Thunb.) Kunth * +               Chinese cup grass, hairy cup grass, woolly cup grass                  Paspalum villosum Thunb.
Festuca arundinacea Schreb. * +               reed fescue, rye grass, tall fescue                  Festuca elatior L. subsp. arundinacea (Schreb.) Hack.                  Festuca elatior L. var. arundinacea (Schreb.) Wimm.                  Lolium arundinaceum (Schreb.) Darbysh.
Festuca pratensis Huds. * +               meadow fescue, meadow rye grass, rye grass                  Festuca elatior L., pro parte                  Lolium pratense (Huds.) Darbysh.
Glyceria R.Br. *               manna grass (DISTRIBUTION MAP GALLERY of SPECIES)
Glyceria borealis (Nash) Batch. * +               northern manna grass                  Panicularia borealis Nash
Glyceria canadensis (Michx.) Trin. * +               rattlesnake grass, rattlesnake manna grass                  Panicularia canadensis (Michx.) Kuntze
Glyceria grandis S.Watson * +               American manna grass, reed manna grass                  Glyceria grandis S.Watson f. pallescens Fernald                  Glyceria grandis S.Watson var. grandis                  Glyceria maxima (Hartm.) Holmb. subsp. grandis (S.Watson) Hultén                  Glyceria maxima (Hartm.) Holmb. var. americana (Torr.) B.Boivin                  Panicularia grandis (S.Watson) Nash
Glyceria X laxa (Scribn.) Scribn.               [Excluded] manna grass                  (PARENTS = Glyceria canadensis (Michx.) Trin. X G. grandis S. Watson or G. striata (Lam.) Hitchc.)                  Glyceria canadensis (Michx.) Trin. var. laxa (Scribn.) Hitchc.                  Glyceria X ottawensis Bowden                  Panicularia laxa Scribn.
Glyceria maxima (Hartm.) Holmb. * +               English water grass, reed manna grass, tall manna grass                  Glyceria spectabilis Mert. & W.D.J.Koch                  Molinia maxima Hartm.
Glyceria septentrionalis Hitchc. * +               eastern manna grass, floating manna grass                  Panicularia septentrionalis (Hitchc.) E.P.Bicknell
Glyceria striata (Lam.) Hitchc. * +               fowl manna grass, fowl meadow grass                  Glyceria nervata (Willd.) Trin.                  Glyceria striata (Lam.) Hitchc. var. stricta (Scribn.) Fernald                  Glyceria striata (Lam.) Hitchc. var. striata                  Panicularia nervata (Willd.) Kuntze                  Panicularia nervata (Willd.) Kuntze var. parviglumis Scribn. & Merr.                  Poa nervata Willd.
Hierochloe hirta (Schrank) Borbás subsp. arctica (J.Presl) G.Weim. * +               northern sweet grass, vanilla grass                  Anthoxanthum hirtum (Schrank) Y.Schouten & Veldkamp subsp. arcticum (J.Presl) G.C.Tucker                  Hierochloe arctica J.Presl                  Hierochloe odorata auct. non (L.) P.Beauv.
Holcus lanatus L. * +               velvet grass
Hordeum jubatum L. * +               foxtail barley, squirrel-tail grass                  Critesion jubatum (L.) Nevski                  Hordeum caespitosum Scribn. ex Pammel                  Hordeum jubatum L. subsp. jubatum                  Hordeum jubatum L. var. caespitosum (Scribn. ex Pammel) Hitchc.
Koeleria macrantha (Ledeb.) Schult. * +               June grass, prairie June grass                  Koeleria cristata auct. pro parte, non Pers.                  Koeleria cristata Pers. var. longifolia Vasey ex Burtt Davy                  Koeleria cristata Pers. var. pinetorum Abrams                  Koeleria gracilis Pers.                  Koeleria nitida Nutt.                  Koeleria pyramidata auct. pro parte, non (Lam.) P.Beauv.                  Koeleria yukonensis Hultén
Leersia Sw. *               cut grass (DISTRIBUTION MAP GALLERY of SPECIES)
Leersia lenticularis Michx. * +               catchfly grass                  Homalocenchrus lenticularis (Michx.) Kuntze
Leersia oryzoides (L.) Sw. * +               rice cut grass                  Homalocenchrus oryzoides (L.) Pollich                  Leersia oryzoides (L.) Sw. f. glabra A.A.Eaton                  Leersia oryzoides (L.) Sw. f. inclusa (Wiesb.) Dörfl.                  Phalaris oryzoides L.
Leersia virginica Willd. * +               white grass                  Homalocenchrus virginicus (Willd.) Britton                  Leersia virginica Willd. var. ovata (Poir.) Fernald
Leymus arenarius (L.) Hochst. * +               lyme grass, sand rye grass                  Elymus arenarius L.
Leymus mollis (Trin.) Hara subsp. mollis               [Excluded] American dune grass                  Elymus arenarius L. subsp. mollis (Trin.) Hultén                  Elymus arenarius L. var. scabrinervis (Bowden) B.Boivin                  Elymus arenarius L. var. villosus E.Mey.                  Elymus capitatus Scribn.                  Elymus mollis Trin.                  Leymus arenarius (L.) Hochst. subsp. mollis (Trin.) Tzvelev                  Leymus mollis (Trin.) Hara var. mollis
Lolium L. *               darnel, rye grass (DISTRIBUTION MAP GALLERY of SPECIES)
Lolium perenne L. * +               English rye grass, perennial rye grass                  (for list of synonyms - see the subspecies)
Lolium perenne L. subsp. multiflorum (Lam.) Husn. * +               Italian rye grass                  Lolium multiflorum Lam.                  Lolium multiflorum Lam. var. diminutum Mutel                  Lolium multiflorum Lam. var. muticum DC.                  Lolium multiflorum Lam. var. ramosum Guss. ex Arcang.                  Lolium perenne L. var. multiflorum (Lam.) Parn.
Lolium perenne L. subsp. perenne * +               English rye grass, perennial rye grass                  Lolium perenne L. var. aristatum Willd.                  Lolium perenne L. var. cristatum Pers. ex B.D.Jacks.                  Lolium perenne L. var. perenne
Melica L. *               melic grass (DISTRIBUTION MAP GALLERY of SPECIES)
Melica nitens (Scribn.) Nutt. ex Piper * +               tall melic grass, three-flowered melic grass
Melica smithii (Porter ex A.Gray) Vasey * +               Smith's melic grass                  Avena smithii Porter ex A.Gray                  Bromelica smithii (Porter ex A.Gray) Farw.
Milium effusum L. * +               American millet grass, wood millet                  Milium effusum L. var. cisatlanticum Fernald
Miscanthus sacchariflorus (Maxim.) Benth. * +               Amur silver grass, Japanese plume grass
Molinia caerulea (L.) Moench * +               purple moor grass
Muhlenbergia asperifolia (Nees & Meyen ex Trin.) Parodi * +               alkali muhly, scratch grass                  Sporobolus asperifolius Nees & Meyen ex Trin.
Muhlenbergia cuspidata (Torr. ex Hook.) Rydb. * +               plains muhly, prairie muhly, prairie satin grass                  Muhlenbergia brevifolia (Nutt.) M.E.Jones
Muhlenbergia frondosa (Poir.) Fernald * +               common satin grass, wire-stem muhly                  Agrostis frondosa Poir.                  Muhlenbergia commutata (Scribn.) Bush                  Muhlenbergia frondosa (Poir.) Fernald f. commutata (Scribn.) Fernald                  Muhlenbergia frondosa (Poir.) Fernald f. frondosa                  Muhlenbergia mexicana (L.) Trin. f. commutata (Scribn.) Wiegand
Muhlenbergia mexicana (L.) Trin. * +               leafy satin grass, Mexican muhly, wire-stem muhly                  Agrostis mexicana L.                  Muhlenbergia ambigua Torr.                  Muhlenbergia foliosa (Roem. & Schult.) Trin.                  Muhlenbergia foliosa (Roem. & Schult.) Trin. subsp. ambigua (Torr.) Scribn.                  Muhlenbergia foliosa (Roem. & Schult.) Trin. subsp. setiglumis (S.Watson) Scribn.                  Muhlenbergia mexicana (L.) Trin. f. ambigua (Torr.) Fernald                  Muhlenbergia mexicana (L.) Trin. f. mexicana                  Muhlenbergia mexicana (L.) Trin. f. setiglumis (S.Watson) Fernald                  Muhlenbergia mexicana (L.) Trin. var. filiformis (Willd.) Scribn.
Muhlenbergia sobolifera (Muhl. ex Willd.) Trin. * +               creeping muhly, rock muhly, rock satin grass                  Agrostis sobolifera Muhl. ex Willd.                  Muhlenbergia sobolifera (Muhl. ex Willd.) Trin. var. setigera Scribn.
Muhlenbergia sylvatica (Torr.) Torr. ex A.Gray * +               forest muhly, woodland drop-seed, woodland satin grass                  Agrostis sylvatica Torr., non Huds.                  Muhlenbergia sylvatica (Torr.) Torr. ex A.Gray f. attenuata (Scribn.) E.J.Palmer & Steyerm.                  Muhlenbergia sylvatica (Torr.) Torr. ex A.Gray var. sylvatica                  Muhlenbergia umbrosa Scribn.
Muhlenbergia tenuiflora (Willd.) Britton, Sterns & Poggenb. * +               slender muhly, slender satin grass, woodland drop-seed                  Muhlenbergia tenuiflora (Willd.) Britton, Sterns & Poggenb. var. tenuiflora
Muhlenbergia uniflora (Muhl.) Fernald * +               bog muhly, one-flowered satin grass                  Muhlenbergia uniflora (Muhl.) Fernald var. terrae-novae Fernald                  Sporobolus uniflorus (Muhl.) Scribn. & Merr.
Oryzopsis Michx. *               mountain grass, rice grass (DISTRIBUTION MAP GALLERY of SPECIES)
Oryzopsis asperifolia Michx. * +               rough-leaved rice grass
Oryzopsis canadensis (Poir.) Torr. * +               Canada mountain rice grass, Canadian rice grass                  Stipa canadensis Poir.
Oryzopsis pungens (Torr. ex Spreng.) Hitchc. * +               mountain rice grass, short-horned rice grass                  Milium pungens Torr. ex Spreng.
Oryzopsis racemosa (Sm.) Ricker ex Hitchc. * +               black-seeded rice grass                  Milium racemosum Sm.                  Piptatherum racemosum Ricker ex Hitchc.
Panicum L. *               panic grass (DISTRIBUTION MAP GALLERY of SPECIES)
Panicum capillare L. subsp. capillare * +               common witch grass, old-witch grass, witch grass                  Panicum barbipulvinatum Nash                  Panicum capillare L. subsp. barbipulvinatum (Nash) Tzvelev                  Panicum capillare L. var. barbipulvinatum (Nash) McGregor                  Panicum capillare L. var. brevifolium Vasey ex Rydb. & Shear                  Panicum capillare L. var. occidentale Rydb.
Panicum dichotomiflorum Michx. subsp. dichotomiflorum * +               fall panic grass, fall panicum, knee grass                  Panicum dichotomiflorum Michx. var. dichotomiflorum                  Panicum dichotomiflorum Michx. var. geniculatum (A.W.Wood) Fernald                  Panicum dichotomiflorum Michx. var. imperiorum Fernald
Panicum flexile (Gatt.) Scribn. * +               wiry panic grass, wiry witch grass                  Panicum capillare L. var. flexile Gatt.
Panicum philadelphicum Bernh. ex Trin. subsp. philadelphicum * +               Philadephia panic grass                  Panicum philadelphicum Bernh. ex Trin. var. tuckermanii (Fernald) Steyerm. & Schmoll                  Panicum tuckermanii Fernald
Panicum rigidulum Bosc. ex Nees subsp. rigidulum * +               red-top panic grass                  Panicum agrostoides Spreng.                  Panicum agrostoides Spreng. var. ramosius (C.Mohr) Fernald                  Panicum elongatum Pursh var. ramosius C.Mohr                  Panicum rigidulum Bosc ex Nees var. rigidulum
Panicum virgatum L. * +               switch grass                  Panicum virgatum L. var. cubense Griseb.                  Panicum virgatum L. var. obtusum A.W.Wood                  Panicum virgatum L. var. virgatum
Paspalum L. *               bead grass (DISTRIBUTION MAP GALLERY of SPECIES)
Paspalum setaceum Michx. * +               hairy bead grass, thin paspalum                  (for list of synonyms - see the varieties)
Paspalum setaceum Michx. var. muhlenbergii (Nash) D.J.Banks +               hairy bead grass, hairy lens grass, hurrahgrass, Muhlenberg's hairy bead grass, thin paspalum                  Paspalum ciliatifolium Michx. var. muhlenbergii (Nash) Fernald                  Paspalum muhlenbergii Nash                  Paspalum pubescens Muhl. ex Willd.                  Paspalum setaceum Michx. var. calvescens Fernald
Paspalum setaceum Michx. var. stramineum (Nash) D.J.Banks +               downy lens grass, hairy bead grass, straw-colored hairy bead grass, yellow sand paspalum                  Paspalum bushii Nash                  Paspalum ciliatifolium Michx. var. stramineum (Nash) Fernald                  Paspalum stramineum Nash
Phalaris L. *               canary grass (DISTRIBUTION MAP GALLERY of SPECIES)
Phalaris arundinacea L. * +               reed canary grass                  Phalaroides arundinacea (L.) Raeusch.                  Phalaris arundinacea L. f. variegata (Parn.) Druce                  Phalaris arundinacea L. var. picta L.                  Phalaroides arundinacea (L.) Raeusch. var. picta (L.) Tzvelev
Phalaris canariensis L. * +               common canary grass
Phragmites australis (Cav.) Trin. ex Steud. * +               common reed, common reed grass                  Phragmites australis (Cav.) Trin. ex Steud. var. berlandieri (E.Fourn.) C.F.Reed                  Phragmites communis Trin.                  Phragmites communis Trin. subsp. berlandieri (E.Fourn.) A.Löve & D.Löve                  Phragmites communis Trin. var. berlandieri (E.Fourn.) Fernald                  Phragmites phragmites (L.) H.Karst.
Poa L. *               bluegrass (DISTRIBUTION MAP GALLERY of SPECIES)
Poa alsodes A.Gray * +               grove bluegrass, woodland bluegrass
Poa annua L. * +               annual bluegrass, speargrass                  Poa annua L. var. aquatica Asch.                  Poa annua L. var. reptans Hausskn.
Poa bulbosa L. * +               bulbous bluegrass
Poa compressa L. * +               Canada bluegrass, wiregrass
Poa glauca Vahl * +               glaucous bluegrass                  Poa glauca Vahl subsp. conferta (Blytt) Lindm.                  Poa glauca Vahl subsp. glauca                  Poa glauca Vahl var. conferta (Blytt) Nannf.                  Poa glauca Vahl var. laxiuscula (Blytt) Lindm.
Poa interior Rydb.               [Excluded] inland bluegrass                  Poa nemoralis L. subsp. interior (Rydb.) W.A.Weber                  Poa nemoralis L. var. interior (Rydb.) Butters & Abbe
Poa languida Hitchc. * +               weak bluegrass
Poa nemoralis L. * +               wood bluegrass
Poa paludigena Fernald & Wiegand * +               bog bluegrass, marsh bluegrass, Patterson's bluegrass
Poa palustris L. * +               fowl meadow grass, marsh bluegrass                  Poa crocata Michx.                  Poa triflora Gilib.
Poa pratensis L. * +               Kentucky bluegrass                  Poa agassizensis B.Boivin & D.Löve                  Poa alpigena (Fr. ex Blytt) Lindm.                  Poa alpigena (Fr. ex Blytt) Lindm. subsp. colpodea (Fr. ex Blytt) Tzvelev                  Poa alpigena (Fr. ex Blytt) Lindm. var. colpodea (Fr. ex Blytt) Schol.                  Poa angustifolia L.                  Poa pratensis L. subsp. agassizensis (B.Boivin & D.Löve) Roy L.Taylor & MacBryde                  Poa pratensis L. subsp. alpigena (Fr. ex Blytt) Hiitonen                  Poa pratensis L. subsp. angustifolia (L.) Lej.                  Poa pratensis L. subsp. colpodea (Fr. ex Blytt) Tzvelev                  Poa pratensis L. var. angustifolia (L.) Gaudin                  Poa pratensis L. var. alpigena Fr. ex Blytt                  Poa pratensis L. var. colpodea (Fr. ex Blytt) Schol.                  Poa pratensis L. var. domestica Laest.                  Poa pratensis L. var. gelida (Roem. & Schult.) Böcher                  Poa pratensis L. var. iantha Wahlenb.                  Poa pratensis L. var. vivipara (Malmgren) B.Boivin
Poa saltuensis Fernald & Wiegand * +               woodland bluegrass                  Poa debilis Torr.                  Poa saltuensis Fernald & Wiegand var. microlepis Fernald & Wiegand
Poa sylvestris A.Gray * +               forest bluegrass, woodland bluegrass
Poa trivialis L. * +               rough bluegrass
Poa wolfii Scribn. * +               Wolf's bluegrass
Polypogon *               beard grass (DISTRIBUTION MAP GALLERY of SPECIES)
Polypogon monspeliensis (L.) Desf. *               [Excluded] annual rabbit's-foot grass                  Alopecurus monspeliensis L.
Puccinellia Parl. *               alkali grass (DISTRIBUTION MAP GALLERY of SPECIES)
Puccinellia distans (Jacq.) Parl. * +               European alkali grass, weeping alkali grass                  (for list of synonyms - see the subspecies)
Puccinellia distans (Jacq.) Parl. subsp. borealis (Holmb.) W.E.Hughes +               European alkali grass, weeping alkali grass                  Phippsia nutkaensis (C.Presl) A.Löve & D.Löve subsp. borealis (Holmb.) A.Löve & D.Löve                  Phippsia sibirica (Holmb.) A.Löve & D.Löve                  Puccinellia coarctata Fernald & Weath.                  Puccinellia coarctata Fernald & Weath. var. pseudofasciculata T.J.Sorensen                  Puccinellia distans (Jacq.) Parl. var. angustifolia (Blytt) Holmb.                  Puccinellia sibirica Holmb.
Puccinellia distans (Jacq.) Parl. subsp. distans * +               European alkali grass, weeping alkali grass                  Poa distans Jacq.                  Puccinellia distans (Jacq.) Parl. var. tenuis (Uechtr.) Fernald & Weath.                  Puccinellia retroflexa (Curtis) Holmb.                  Puccinellia suksdorfii H.St.John
Puccinellia fernaldii (Hitchc.) E.G.Voss * +               Fernald's false manna grass                  Glyceria fernaldii (Hitchc.) H.St.John                  Glyceria pallida (Torr.) Trin. var. fernaldii Hitchc.                  Torreyochloa fernaldii (Hitchc.) Church                  Torreyochloa pallida (Torr.) Church var. fernaldii (Hitchc.) Dore ex T.Koyama & Kawano
Puccinellia nuttalliana (Schult.) Hitchc. * +               Nuttall's alkali grass                  Puccinellia airoides (Nutt.) S.Watson & J.M.Coult.                  Puccinellia cusickii Weath.
Puccinellia pallida (Torr.) R.T.Clausen * +               pale false manna grass                  Glyceria pallida (Torr.) Trin.                  Panicularia pallida (Torr.) Kuntze                  Torreyochloa pallida (Torr.) Church                  Torreyochloa pallida (Torr.) Church var. pallida                  Windsoria pallida Torr.
Schedonnardus paniculatus (Nutt.) Trel.               [Excluded] tumble-grass
Schizachne purpurascens (Torr.) Swallen * +               false melic grass                  Avena torreyi Nash                  Melica purpurascens (Torr.) Hitchc.                  Schizachne purpurascens (Torr.) Swallen var. pubescens Dore                  Schizachne purpurascens (Torr.) Swallen var. purpurascens                  Schizachne striata (Michx.) Hultén                  Trisetum purpurascens Torr.
Schizachyrium scoparium (Michx.) Nash * +               broom beard grass, little blue-stem, prairie beard grass                  (for list of synonyms - see the varieties)
Schizachyrium scoparium (Michx.) Nash var. scoparium * +               broom beard grass, broom blue-stem, little blue-stem                  Andropogon neomexicanus Nash                  Andropogon praematurus Fernald                  Andropogon scoparius Michx.                  Andropogon scoparius Michx. var. frequens F.T.Hubb.                  Andropogon scoparius Michx. var. neomexicanus (Nash) Hitchc.                  Andropogon scoparius Michx. var. polycladus Scribn. & Ball                  Andropogon scoparius Michx. var. septentrionalis Fernald & Griscom                  Andropogon scoparius Michx. var. villosissimus Kearney                  Schizachyrium praematurum (Fernald) C.F.Reed                  Schizachyrium scoparium (Michx.) Nash subsp. scoparium                  Schizachyrium scoparium (Michx.) Nash var. frequens (F.T.Hubb.) Gould                  Schizachyrium scoparium (Michx.) Nash var. neomexicanum (Nash) Gould                  Schizachyrium scoparium (Michx.) Nash var. polycladum (Scribn. & Ball) C.F.Reed
Setaria P.Beauv. *               foxtail grass, bristle grass (DISTRIBUTION MAP GALLERY of SPECIES)
Setaria faberi R.A.W.Herrm. * +               Chinese foxtail, giant foxtail, Japanese bristle grass, nodding foxtail
Setaria italica (L.) P.Beauv. * +               foxtail bristle grass, foxtail millet                  Chaetochloa italica (L.) Scribn.                  Panicum italicum L.                  Setaria italica (L.) P.Beauv. var. metzeri (Körn.) Jáv.                  Setaria italica (L.) P.Beauv. var. stramineofructa (F.T.Hubb.) L.H.Bailey
Setaria pumila Poir.) Roem. & Schult. subsp. pumila * +               pigeon grass, yellow foxtail                  Panicum pumilum Poir.                  Setaria glauca (L.) P.Beauv.                  Setaria glauca auct. non (L.) P.Beauv., sensu Vickery                  Setaria lutescens (Weigel) F.T.Hubb.
Setaria verticillata (L.) P.Beauv. * +               bristly foxtail, hooked bristle grass                  Chaetochloa verticillata (L.) Scribn.                  Panicum verticillatum L.                  Setaria carnei Hitchc.                  Setaria decipiens Schimp. ex Nyman                  Setaria verticillata (L.) P.Beauv. var. verticillata
Setaria verticilliformis Dumort. +               barbed bristle grass                  Panicum verticillatum L. var. ambiguum Guss.                  Setaria gussonei Kerguélen                  Setaria verticillata (L.) P.Beauv. var. ambigua (Guss.) Parl.                  Setaria viridis (L.) P.Beauv. var. ambigua (Guss.) Coss. & Durieu
Setaria viridis (L.) P.Beauv. * +               green bristle grass, green foxtail                  (for list of synonyms - see the varieties)
Setaria viridis (L.) P.Beauv. var. major (Gaudin) Peterm. +               giant green foxtail, green bristle grass, green foxtail                  Panicum viride L. var. majus Gaudin                  Setaria viridis (L.) P.Beauv. var. robustapurpurea Schreib.
Setaria viridis (L.) P.Beauv. var. viridis * +               green bristle grass, green foxtail                  Chaetochloa viridis (L.) Scribn.                  Panicum viride L.                  Setaria viridis (L.) P.Beauv. var. breviseta (Döll) Hitchc.                  Setaria viridis (L.) P.Beauv. var. robustaalba Schreib.                  Setaria viridis (L.) P.Beauv. var. weinmannii (Roem. & Schult.) Borbás
Sorghastrum nutans (L.) Nash * +               yellow Indian grass                  Andropogon nutans L.                  Sorghastrum avenaceum (Michx.) Nash
Sorghum X almum Parodi (pro sp.) +               almum sorghum, Columbus grass                  (PARENTS = Sorghum bicolor (L.) Moench X S.halepense (L.) Pers.)
Sorghum halepense (L.) Pers. * +               Johnson grass
Spartina pectinata Link * +               prairie cord grass, slough grass                  Spartina michauxiana Hitchc.                  Spartina pectinata Link var. suttiei (Farw.) Fernald
Sphenopholis Scribn. *               wedge grass (DISTRIBUTION MAP GALLERY of SPECIES)
Sphenopholis intermedia (Rydb.) Rydb. * +               slender wedge grass                  Eatonia intermedia Rydb.                  Sphenopholis intermedia (Rydb.) Rydb. var. pilosa Dore                  Sphenopholis obtusata (Michx.) Scribn. var. major (Torr.) Erdman
Sphenopholis obtusata (Michx.) Scribn. * +               prairie wedge grass, prairie wedge scale                  Aira obtusata Michx.                  Sphenopholis obtusata (Michx.) Scribn. var. lobata (Trin.) Scribn.                  Sphenopholis obtusata (Michx.) Scribn. var. obtusata                  Sphenopholis obtusata (Michx.) Scribn. var. pubescens (Scribn. & Merr.) Scribn.
Sporobolus R.Br. *               drop-seed, rush grass (DISTRIBUTION MAP GALLERY of SPECIES)
Sporobolus clandestinus (Biehler) Hitchc. * +               hidden drop-seed, rough drop-seed, rough rush grass                  Sporobolus asper (Michx.) Kunth var. canovirens (Nash) Shinners                  Sporobolus asper (Michx.) Kunth var. clandestinus (Biehler) Shinners                  Sporobolus canovirens Nash                  Sporobolus clandestinus (Biehler) Hitchc. var. canovirens (Nash) Steyerm. & Kucera                  Sporobolus longifolius (Torr.) A.W.Wood
Sporobolus vaginiflorus (Torr. ex A.Gray) A.W.Wood var. vaginiflorus * +               poverty grass, poverty drop-seed, sheathed drop-seed                  Sporobolus vaginiflorus (Torr. ex A.Gray) A.W.Wood var. inaequalis Fernald
Stipa L. *               needle grass, porcupine grass (DISTRIBUTION MAP GALLERY of SPECIES)
Stipa spartea Trin. * +               needle grass, porcupine grass                  Hesperostipa spartea (Trin.) Barkworth
Stipa viridula Trin. * +               green needle grass                  Nassella viridula (Trin.) Barkworth
Triplasis purpurea (Walter) Chapm. * +               purple sand grass                  Aira purpurea Walter                  Triplasis intermedia Nash
Ventenata dubia (Leers) Coss. & Durieu * +               soft-bearded oat grass, ventenata grass                  Avena dubia Leers                  Ventenata avenacea Koeler
Family Pontederiaceae (click for list of genera only)
Heteranthera dubia (Jacq.) MacMill. * +               water star-grass                  Commelina dubia Jacq.                  Heteranthera graminea (Michx.) Vahl                  Heteranthera liebmannii (Buchenau) Shinners                  Schollera graminea (Michx.) Raf.                  Zosterella dubia (Jacq.) Small                  Zosterella longituba Alexander
Family Potamogetonaceae (click for list of genera only)
Potamogeton gramineus L. * +               grass-leaved pondweed, variable-leaved pondweed                  Potamogeton gramineus L. var. graminifolius Fr.                  Potamogeton gramineus L. var. maximus Morong ex A.Benn.                  Potamogeton gramineus L. var. myriophyllus J.W.Robbins                  Potamogeton gramineus L. var. typicus Ogden                  Potamogeton heterophyllus auct. non Schreb.
Potamogeton perfoliatus L. * +               clasping-leaf pondweed, perfoliate pondweed, red-head-grass                  Potamogeton bupleuroides Fernald                  Potamogeton perfoliatus L. subsp. bupleuroides (Fernald) Hultén                  Potamogeton perfoliatus L. var. bupleuroides (Fernald) Farw.
Family Rubiaceae (click for list of genera only)
Galium aparine L. * +               annual bedstraw, cleavers, goose-grass, sticky-willy                  Galium agreste Wallr. var. echinospermum Wallr.                  Galium aparine L. var. aparine                  Galium aparine L. var. echinospermum (Wallr.) Farw.                  Galium aparine L. var. intermedium (Merr.) Briq.                  Galium aparine L. var. minor Hook.                  Galium aparine L. var. vaillantii (DC.) Koch                  Galium spurium L. var. echinospermum (Wallr.) Hayek                  Galium spurium L. var. vaillantii (DC.) Gren. & Godr.                  Galium spurium L. var. vaillantii (DC.) G.Beck                  Galium vaillantii DC.
Family Ruppiaceae (click for list of genera only)
Ruppia cirrhosa (Petagna) Grande * +               spiral ditch-grass                  Buccaferrea cirrhosa Petagna                  Ruppia cirrhosa (Petagna) Grande subsp. occidentalis (S.Watson) A.Löve & D.Löve                  Ruppia maritima L. var. occidentalis (S.Watson) Graebn.                  Ruppia maritima L. var. spiralis Morris                  Ruppia occidentalis S.Watson
Family Saxifragaceae (click for list of genera only)
Parnassia L. *               gog-stars, grass-of-Parnassus (DISTRIBUTION MAP GALLERY of SPECIES)
Parnassia glauca Raf. * +               American grass-of-Parnassus, fen grass-of-Parnassus                  Parnassia americana Muhl.                  Parnassia caroliniana Michx., misapplied
Parnassia palustris L. var. tenuis Wahlenb. * +               marsh grass-of-Parnassus, swamp grass-of-Parnassus                  Parnassia multiseta (Ledeb.) Fernald                  Parnassia palustris L. subsp. neogaea (Fernald) Hultén                  Parnassia palustris L. var. neogaea Fernald
Parnassia parviflora DC. * +               small-flowered grass-of-Parnassus                  Parnassia palustris L. var. parviflora (DC.) B.Boivin
Family Scheuchzeriaceae (click for list of genera only)
Scheuchzeria palustris L. * +               arrow-grass, pod-grass                  Scheuchzeria americana (Fernald) G.N.Jones                  Scheuchzeria palustris L. subsp. americana (Fernald) Hultén                  Scheuchzeria palustris L. var. americana Fernald
Family Xyridaceae (click for list of genera only)
Xyris L. *               yellow-eyed-grass (DISTRIBUTION MAP GALLERY of SPECIES)
Xyris difformis Chapm. var. difformis *               [Excluded] bog yellow-eyed-grass, tall yellow-eyed-grass
Xyris montana Ries * +               bog yellow-eyed-grass, northern yellow-eyed-grass                  Xyris flexuosa Muhl. var. pusilla A.Gray                  Xyris papillosa Fassett                  Xyris papillosa Fassett var. exserta Fassett
Xyris torta Sm. * +               slender yellow-eyed-grass                  Xyris bulbosa Kunth                  Xyris flexuosa sensu Chapm., not Muhl.                  Xyris indica L., pro parte                  Xyris torta Sm. var. macropoda Fernald                  Xyris torta Sm. var. occidentalis Malme