| Family |
Taxon |
Common Name | Photographs |
| Aceraceae |
Acer negundo L. |
ash-leaved maple, box elder |
|
| Aceraceae |
Acer negundo L. var. violaceum (Kirchn.) H.Jaeger |
box elder |
|
| Araceae |
Symplocarpus foetidus (L.) Salisb. ex W.P.C.Barton |
skunk-cabbage |
|
| Asclepiadaceae |
Asclepias syriaca L. |
common milkweed, silkweed |
|
| Asteraceae |
Antennaria parlinii Fernald |
Parlin's pussy-toes, plantain pussy-toes |
|
| Asteraceae |
Antennaria parlinii Fernald subsp. fallax (Greene) R.J.Bayer & Stebbins |
Parlin's pussy-toes, plantain pussy-toes |
|
| Asteraceae |
Anthemis cotula L. |
dog-fennel, mayweed, stinking chamomile, stinking-cotula |
|
| Asteraceae |
Bidens coronata (L.) Britton |
northern tickseed-sunflower, tall swamp marigold |
|
| Asteraceae |
Cirsium muticum Michx. |
swamp thistle |
|
| Asteraceae |
Eupatorium perfoliatum L. var. perfoliatum |
boneset, common boneset, thoroughwort |
|
| Asteraceae |
Helenium autumnale L. var. autumnale |
common sneezeweed |
|
| Asteraceae |
Helianthus giganteus L. |
giant sunflower, swamp sunflower, tall sunflower |
|
| Asteraceae |
Solidago canadensis L. |
Canadian goldenrod, common goldenrod |
|
| Asteraceae |
Solidago canadensis L. var. scabra Torr. & A.Gray |
Canadian goldenrod, common goldenrod, tall goldenrod |
|
| Berberidaceae |
Podophyllum peltatum L. |
May-apple, wild mandrake |
|
| Caprifoliaceae |
Sambucus canadensis L. var. canadensis |
American elder, elderberry |
|
| Caprifoliaceae |
Triosteum aurantiacum E.P.Bicknell |
early horse-gentian, orange-fruit horse-gentian |
|
| Caprifoliaceae |
Triosteum aurantiacum E.P.Bicknell var. aurantiacum |
early horse-gentian, orange-fruit horse-gentian |
|
| Cucurbitaceae |
Echinocystis lobata (Michx.) Torr. & A.Gray |
balsam-apple, wild-cucumber |
|
| Fabaceae |
Melilotus albus Medik. |
white sweet-clover |
|
| Gentianaceae |
Gentiana andrewsii Griseb. var. andrewsii |
Andrews' gentian, bottle gentian, prairie closed gentian |
|
| Hypericaceae |
Hypericum perforatum L. |
common St. John's-wort, Klamath-weed, St. John's-wort |
|
| Liliaceae |
Erythronium americanum Ker Gawl. subsp. americanum |
American trout-lily, yellow dog-tooth violet, yellow trout-lily |
|
| Liliaceae |
Polygonatum biflorum (Walter) Elliott |
giant Solomon's-seal, king Solomon's-seal, smooth Solomon's-seal, Solomon's-seal |
|
| Liliaceae |
Trillium flexipes Raf. |
bent trillium, declined trillium, nodding wake-robin |
|
| Lythraceae |
Lythrum salicaria L. |
purple loosestrife, spiked loosestrife |
|
| Onagraceae |
Oenothera parviflora L. |
northern evening-primrose, small-flowered evening-primrose |
|
| Orchidaceae |
Coeloglossum viride (L.) Hartm. var. virescens (Muhl.) Luer |
long-bracted green orchid, frog orchid |
|
| Oxalidaceae |
Oxalis violacea L. |
violet wood-sorrel |
|
| Polemoniaceae |
Phlox divaricata L. subsp. laphamii (A.W.Wood) Wherry |
blue phlox, forest phlox, wild blue phlox, wild sweet-William, woodland phlox |
|
| Polemoniaceae |
Polemonium reptans L. var. reptans |
Greek-valerian, spreading Jacob's-ladder |
|
| Polygonaceae |
Persicaria sagittata (L.) H.Gross |
arrow-leaved tear-thumb |
|
| Ranunculaceae |
Actaea rubra (Aiton) Willd. |
red baneberry |
|
| Ranunculaceae |
Anemone acutiloba (DC.) G.Lawson |
sharp-lobed hepatica |
|
| Ranunculaceae |
Caltha palustris L. |
cowslip, marsh-marigold, yellow marsh-marigold |
|
| Ranunculaceae |
Enemion biternatum Raf. |
false rue anemone |
|
| Rosaceae |
Geum canadense Jacq. |
white avens |
|
| Rosaceae |
Malus ioensis (A.W.Wood) Britton var. ioensis |
Iowa crab, prairie crabapple |
|
| Rosaceae |
Potentilla norvegica L. |
Norwegian cinquefoil, rough cinquefoil, strawberry-weed |
|
| Rosaceae |
Prunus nigra Aiton |
Canadian plum |
|
| Salicaceae |
Populus tremuloides Michx. |
aspen, quaking aspen |
|
| Typhaceae |
Typha latifolia L. |
broad-leaved cat-tail, common cat-tail |
|
| Urticaceae |
Urtica dioica L. subsp. gracilis (Aiton) Selander |
stinging nettle |
|
| Violaceae |
Viola labradorica Schrank |
alpine violet, dog violet |
|
| Violaceae |
Viola pubescens Aiton |
yellow forest violet, yellow violet |
|
| Violaceae |
Viola pubescens Aiton var. scabriuscula Schwein. ex Torr. & A.Gray |
smooth yellow violet, yellow forest violet, yellow violet |
|
| Vitaceae |
Parthenocissus vitacea (Knerr) Hitchc. |
grape woodbine |
|