| Family |
Taxon |
Common Name | Photographs |
| Asteraceae |
Heliopsis helianthoides (L.) Sweet |
false sunflower, ox-eye, sunflower-everlasting |
|
| Asteraceae |
Heliopsis helianthoides (L.) Sweet var. scabra (Dunal) Fernald |
false sunflower, ox-eye, sunflower-everlasting |
|
| Poaceae |
Hesperostipa spartea (Trin.) Barkworth |
needle grass, porcupine grass |
|
| Saxifragaceae |
Heuchera richardsonii R.Br. |
prairie alumroot, Richardson's alumroot |
|
| Asteraceae |
Hieracium kalmii L. |
Canada hawkweed, Kalm's hawkweed |
|
| Asteraceae |
Hieracium longipilum Torr. ex Hook. |
hairy hawkweed, long-beard hawkweed, long-haired hawkweed, prairie hawkweed |
|
| Asteraceae |
Hieracium scabrum Michx. |
rough hawkweed, sticky hawkweed |
|
| Rubiaceae |
Houstonia longifolia Gaertn. |
long-leaved bluets |
|
| Cistaceae |
Hudsonia tomentosa Nutt. var. tomentosa |
false heather, woolly beach-heather |
|
| Hydrophyllaceae |
Hydrophyllum virginianum L. |
John's-cabbage, Shawnee-salad, Virginia waterleaf |
|
| Hypericaceae |
Hypericum majus (A.Gray) Britton |
larger Canadian St. John's-wort |
|
| Liliaceae |
Hypoxis hirsuta (L.) Coville |
common gold-star, common star-grass, yellow star-grass |
|
| Balsaminaceae |
Impatiens capensis Meerb. |
orange jewelweed, orange touch-me-not, spotted touch-me-not |
|
| Iridaceae |
Iris versicolor L. |
blue flag, harlequin blue flag, northern blue flag |
|
| Juglandaceae |
Juglans cinerea L. |
butternut, white walnut |
|
| Juglandaceae |
Juglans nigra L. |
black walnut |
|
| Juncaceae |
Juncus effusus L. |
common rush, soft rush |
|
| Juncaceae |
Juncus interior Wiegand |
inland rush, interior rush |
|
| Juncaceae |
Juncus tenuis Willd. |
path rush, poverty rush, roadside rush |
|
| Cupressaceae |
Juniperus communis L. var. depressa Pursh |
common juniper |
|
| Cupressaceae |
Juniperus virginiana L. var. virginiana |
eastern red-cedar |
|
| Poaceae |
Koeleria macrantha (Ledeb.) Schult. |
June grass, prairie June grass |
|
| Asteraceae |
Kuhnia eupatorioides L. var. corymbulosa Torr. & A.Gray |
false boneset |
|
| Asteraceae |
Lactuca canadensis L. |
Canada lettuce, tall lettuce, tall wild lettuce, wild lettuce |
|
| Asteraceae |
Lactuca serriola L. |
compass-plant, prickly lettuce |
|
| Boraginaceae |
Lappula squarrosa (Retz.) Durmort. |
European stickseed, spiny stickseed, two-row stickseed |
|
| Fabaceae |
Lathyrus ochroleucus Hook. |
cream pea-vine, pale vetchling, white pea |
|
| Fabaceae |
Lathyrus venosus Muhl. ex Willd. |
forest pea, veiny pea, veiny pea-vine |
|
| Cistaceae |
Lechea intermedia Legg. ex Britton var. intermedia |
intermediate pinweed, large-pod pinweed |
|
| Cistaceae |
Lechea stricta Legg. ex Britton |
bushy pinweed, prairie pinweed |
|
| Cistaceae |
Lechea tenuifolia Michx. |
narrow-leaved pinweed, slender-leaved pinweed |
|
| Poaceae |
Leersia lenticularis Michx. |
catchfly grass |
|
| Poaceae |
Leersia oryzoides (L.) Sw. |
rice cut grass |
|
| Poaceae |
Leersia virginica Willd. |
white grass |
|
| Lemnaceae |
Lemna trisulca L. |
forked duckweed, star duckweed |
|
| Lemnaceae |
Lemna turionifera Landolt |
perennial duckweed, Turion duckweed |
|
| Brassicaceae |
Lepidium densiflorum Schrad. |
prairie pepper-weed, small peppergrass |
|
| Brassicaceae |
Lepidium virginicum L. var. virginicum |
common peppergrass, poor-man's-pepper, Virginia pepper-weed |
|
| Fabaceae |
Lespedeza capitata Michx. |
round-headed bush-clover, round-headed lespedeza |
|
| Asteraceae |
Liatris aspera Michx. |
lacerate blazing-star, rough blazing-star, tall gay-feather |
|
| Asteraceae |
Liatris cylindracea Michx. |
cylindrical blazing-star, few-headed blazing-star |
|
| Liliaceae |
Lilium philadelphicum L. |
orange-cup lily, wood lily |
|
| Linaceae |
Linum sulcatum Riddell |
grooved yellow flax |
|
| Orchidaceae |
Liparis liliifolia (L.) Rich. ex Lindl. |
brown wide-lip orchid, large twayblade, lily-leaved twayblade, mauve sleekwort, purple twayblade |
|
| Cyperaceae |
Lipocarpha micrantha (Vahl) G.C.Tucker |
small-flowered hemicarpha |
|
| Boraginaceae |
Lithospermum canescens (Michx.) Lehm. |
hoary puccoon |
|
| Boraginaceae |
Lithospermum caroliniense (Walter ex J.F.Gmel.) MacMill. subsp. croceum (Fernald) Cusick |
Carolina puccoon, hairy puccoon, plains puccoon |
|
| Boraginaceae |
Lithospermum incisum Lehm. |
fringed puccoon, narrow-leaved gromwell, narrow-leaved puccoon |
|
| Lobeliaceae |
Lobelia cardinalis L. var. cardinalis |
cardinal-flower |
|
| Lobeliaceae |
Lobelia inflata L. |
Indian-tobacco |
|