Abbreviations: n=native i=introduced
A=aquatic/wetland F=forest G=cool-season grasslands O=successional/disturbed
sites P=native tallgrass prairie
BW=Baldwin Woods RT=Robinson Tract TC=Tri-County
area
V=Voucher specimen R=Reliable report
Families: Aa-Az B-Cn Co-E F-G H-L M-O Pa-Pok Pol-Pz R-T U-Z
| Family | Genus/Species | Common Name | Origin | Habitat | BW | RT | TC |
| Balsaminaceae | Impatiens capensis | Spotted touch-me-not | n | A | V | V | |
| Impatiens pallida | Pale touch-me-not | n | A | V | |||
| Berberidaceae | Podophyllum peltatum | Mayapple | n | F | V | V | |
| Betulaceae | Corylus americana | American hazelnut | n | F | V | V | |
| Ostrya virginiana | Ironwood | n | F | V | R | ||
| Bignoniaceae | Campsis radicans | Trumpet creeper | i | F,O | V | R | |
| Boraginaceae | Cynoglossum officinale | Common houndstongue | i | A,F | V | R | |
| Hackelia virginiana | Virginia stickseed | n | F | V | V | V | |
| Lappula squarrosa | European stickseed | n | O | R | |||
| Lithospermum arvense | Corn gromwell | i | O | V | R | ||
| Lithospermum canescens | Hoary gromwell | n | P | V | R | ||
| Lithospermum incisum | Narrowleaf gromwell | n | G,P | R | R | V | |
| Lithospermum latifolium | American gromwell | n | F | V | |||
| Myosotis verna | Forget-me-not | n | P | V | |||
| Onosmodium molle | Rough marbleseed | n | G,P | V | |||
| Brassicaceae | Alliaria petiolata | Garlic mustard | i | F | V | V | R |
| Arabis canadensis | Canada rockcress | n | F | V | V | ||
| Arabis shortii | Short's rockcress | n | F | V | |||
| Barbarea vulgaris | Winter cress | i | A,O | V | R | V | |
| Brassica hirta | White mustard | i | O | V | |||
| Brassica nigra | Black mustard | i | O | R | |||
| Camelina microcarpa | Smallfruit false flax | i | O,P | V | V | ||
| Capsella bursa-pastoris | Shepherd's purse | i | O | R | V | ||
| Cardamine concatenata | Toothwort | n | F | V | V | ||
| Cardamine parviflora var. arenicola | Smallflower bittercress | n | F | V | V | ||
| Descurainia pinnata var. osmiarum | Tansy mustard | n | F | V | V | V | |
| Descurainia sophia | Flixweed | i | O | R | R | ||
| Draba brachycarpa | Shortpod draba | n | P | V | |||
| Draba cuneifolia | Wedgeleaf draba | n | P | R | |||
| Erysimum repandum | Bushy wallflower | i | O | R | V | ||
| Hesperis matronalis | Dame's rocket | i | O | R | |||
| Iodanthus pinnatifidus | Purple rocket | n | F | V | |||
| Lepidium densiflorum | Manyflower peppergrass | i | P | R | R | ||
| Nasturtium officinale | Watercress | i | A | V | |||
| Rorippa sessiliflora | Stalkless yellowcress | n | A | V | |||
| Sisymbrium altissimum | Tumbling mustard | i | O | R | |||
| Thlaspi arvense | Field pennycress | i | O | V | R | V | |
| Thlaspi perfoliatum | Perfoliate pennycress | i | O | V | |||
| Cactaceae | Opuntia humifusa | Eastern pricklypear | n | O | R | ||
| Caesalpiniaceae | Cercis canadensis | Redbud | n | F | V | V | V |
| Chamaecrista fasciculata | Showy partridge pea | n | A,O,P | V | R | V | |
| Gleditsia triacanthos | Honey locust | n | F | V | V | R | |
| Gymnocladus dioica | Kentucky coffeetree | n | F | V | V | R | |
| Senna marilandica | Maryland senna | n | G,O | R | V | V | |
| Campanulaceae | Campanula americana | American bellflower | n | A,F | V | V | |
| Lobelia inflata | Indian tobacco | n | A,F | V | |||
| Lobelia siphilitica | Blue lobelia | n | A | V | R | R | |
| Lobelia spicata | Palespike lobelia | n | P | R | |||
| Triodanis leptocarpa | Slimpod Venus' looking-glass | n | P | R | V | ||
| Triodanis perfoliata | Clasping-leaf Venus' looking-glass | n | A,P | V | V | ||
| Cannabaceae | Cannabis sativa var. sativa | Hemp | i | O | R | V | R |
| Humulus lupulus var. pubescens | Hairy hops | n | A,F | V | V | V | |
| Capparaceae | Polanisia dodecandra var. trachysperma | Clammyweed | n | P | R | ||
| Caprifoliaceae | Lonicera dioica | Limber honeysuckle | n | F | V | ||
| Lonicera japonica | Japanese honeysuckle | i | O | V | V | ||
| Sambucus canadensis | Common elderberry | n | A,F | R | R | V | |
| Symphoricarpos orbiculatus | Buckbrush | n | F,G,P | V | R | V | |
| Triosteum perfoliatum var. aurantiacum | Orange horsegentian | n | F | R | |||
| Triosteum perfoliatum var. perfoliatum | Common horsegentian | n | F | V | R | V | |
| Viburnum prunifolium | Blackhaw | n | F | V | |||
| Caryophyllaceae | Arenaria serpyllifolia | Thymeleaf sandwort | i | A,O | V | ||
| Cerastium fontanum ssp. triviale | Common chickweed | n | O | V | V | ||
| Dianthus armeria | Deptford pink | i | G,O,P | V | R | ||
| Paronychia canadensis | Canada nailwort | n | F | V | |||
| Paronychia fastigiata | Forked nailwort | n | F | V | |||
| Saponaria officinalis | Soapwort | i | O | V | |||
| Silene antirrhina | Sleepy catchfly | n | G,O,P | V | R | V | |
| Silene stellata | Starry campion | n | F | V | V | ||
| Stellaria media | Common chickweed | i | A,O | V | V | R | |
| Celastraceae | Celastrus scandens | American bittersweet | n | F | V | R | V |
| Euonymus atropurpureus | Wahoo | a | F | V | V | R | |
| Chenopodiaceae | Chenopodium album | Lamb's-quarters | i | O | R | R | |
| Chenopodium ambrosioides | Mexican tea | i | O | V | |||
| Chenopodium berlandieri var. zschackei | Pitseed goosefoot | n | O,P | R | V | ||
| Chenopodium simplex | Mapleleaf goosefoot | n | F | V | R | R | |
| Chenopodium standleyanum | Standley's goosefoot | n | F | V | R | ||
| Cycloloma atriplicifolium | Winged pigweed | n | O | R | |||
| Cistaceae | Lechea tenuifolia var. occidentalis | Narrowleaf pinweed | n | P | V | ||
| Clusiaceae | Hypericum mutilum | Dwarf St. John's-wort | n | F | V | ||
| Hypericum perforatum | Common St. John's-wort | i | G,O,P | V | V | ||
| Hypericum punctatum | Spotted St. John's-wort | n | G,O,P | V | R | V | |
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