| Polygonum amphibium |
Water Knotweed |
| Polypogon monspeliensis |
Annual Rabbitsfoot Grass |
| Populus alba |
White Poplar |
| Populus balsamifera |
Balsam Poplar |
Populus deltoides   |
Cottonwood |
| Populus deltoides ssp monilifera |
Plains Cottonwood |
| Populus grandidentata |
Big-Toothed Aspen |
| Potentilla arguta |
Prairie Cinquefoil |
| Potentilla gracilis |
Slender Cinquefoil |
| Psathyrostachys juncea |
Russian Wildrye |
| Ptelea trifoliata |
Common Hoptree |
| Puccinellia nuttalliana |
Nuttall's Alkaligrass |
| Quercus alba |
White Oak |
| Quercus bicolor |
Swamp White Oak |
| Quercus macrocarpa |
Bur Oak |
| Quercus muehlenbergii |
Chinkapin Oak |
| Quercus rubra |
Northern Red Oak |
| Quercus velutina |
Black Oak |
| Ranunculus abortivus |
Kidney-Leaved Buttercup |
| Ranunculus cymbalaria |
Alkali Buttercup |
| Ranunculus flammula |
Greater Creeping Spearwort |
| Ranunculus hispidus |
Hispid Buttercup |
| Ranunculus longirostris |
Longbeak Buttercup |
| Ranunculus pensylvanicus |
Bristly Buttercup |
| Ranunculus repens |
Creeping Buttercup |
| Ranunculus rhomboideus |
Prairie Buttercup |
| Ranunculus sceleratus |
Cursed Buttercup |
| Ratibida columnifera |
Red Prairie Coneflower |
| Ratibida pinnata |
Grayheaded Coneflower |
| Rhus glabra |
Smooth Sumac |
| Ribes aureum |
Golden Currant |
| Ribes lacustre |
Prickly Currant |
| Rorippa sessiliflora |
Sissile-Flowered Yellow Cress |
| Rorippa sinuata |
Spreading Yellowcress |
| Rorippa sylvestris |
Creeping Yellowcress |
| Rudbeckia fulgida |
Orange Coneflower |
| Rudbeckia gloriosa |
Gloriosa Daisy |
| Rudbeckia hirta |
Black-Eyed Susan |
| Rudbeckia laciniata |
Tall Coneflower |
| Rudbeckia subtomentosa |
Sweet Black-Eyed Susan |
| Rudbeckia triloba |
Brown-Eyed Susan |
| Rumex maritimus |
Golden Dock |
| Sagittaria cuneata |
Arumleaf Arrowhead |
| Sagittaria latifolia |
Broad-Leaved Arrowhead |
| Salix alba |
White Willow |
| Salix humilis |
Prairie Willow |
| Salix lucida |
Shining Willow |
| Salix lutea |
Yellow Willow |
| Salix pentandra |
Laurel Willow |
| Schizachyrium scoparium |
Little Bluestem |
| Scirpus georgianus |
Georgia Bulrush |
| Secale cereale |
Cereal Rye |
| Senecio integerrimus |
Lambstongue Ragwort |
| Senecio vulgaris |
Old Man In-the-Spring |
| Shepherdia argentea |
Silver Buffaloberry |
| Shepherdia canadensis |
Russet Buffaloberry |
| Siliphium integrifolium |
Rosin Weed |
| Siliphium terebinthinaceum |
Prairie Dock |
| Silphium laciniatum |
Compass Plant |
| Silphium perfoliatum |
Cup Plant |
| Solidago canadensis |
Canada Goldenrod |
| Solidago flexicaulis |
Zigzag Goldenrod |
| Solidago gigantea |
Giant Goldenrod |
| Solidago graminifolia |
Grass-Leaved Goldenrod |
| Solidago missouriensis |
Missouri Goldenrod |
| Solidago nemoralis |
Old Field Goldenrod |
| Solidago riddellii |
Riddell's Goldenrod |
| Solidago rigida |
Stiff Goldenrod |
| Solidago speciosa |
Showy Goldenrod |
| Sorghastrum nutans |
Indian Grass |
| Sorghum bicolor ssp drummondii |
Sudangrass |
| Spartina gracilis |
Alkali Cordgrass |
| Spartina pectinata |
Prairie Cord Grass |
| Sporobolus cryptandrus |
Sand Dropseed |
| Sporobolus heterolepis |
Prairie Dropseed |
| Taraxacum officinale |
Dandelion |
| Taxus canadensis |
Canada Yew |
| Thaspium trifoliatum |
Meadow Parsnip |
| Tilia americana |
Basswood |
| Tragopogon dubius |
Yellow Goat's Beard |
| Trichophorum caespitosum |
Tufted Bulrush |
| Tridens flavus |
Purpletop Tridens |
| Trifolium hybridum |
Alsike Clover |
| Trisetum spicatum |
Spike Trisetum |
| Triticum aestivum |
Common Wheat |
| Tropaeolum nanum |
Nasturtium |
| Tsuga canadensis |
Eastern Hemlock |
| Ulmus rubra |
Slippery Elm |
| Ulmus thomasii |
Rock Elm |
| Utricularia minor |
Lesser Bladderwort |
| Verbascum thapsus |
Common Mullein |
| Viola pubescens |
Yellow Violet |
| Zizia aptera |
Heart Leaved Golden Alexander |
| Zizia aurea |
Golden Alexander |
