| Taxon |
Family |
Common Name |
Photograph |
| Acinos arvensis (Lam.) Dandy |
Lamiaceae |
basil-thyme, mother-of-thyme |
|
| Aconitum columbianum Nutt. subsp. columbianum |
Ranunculaceae |
Columbian monk's-hood |
|
| Aconitum napellus L. |
Ranunculaceae |
garden aconite, Venus'-chariot |
|
| Agastache foeniculum (Pursh) Kuntze |
Lamiaceae |
blue giant hyssop, fragrant giant hyssop, lavender giant hyssop |
|
| Ajuga genevensis L. |
Lamiaceae |
blue bugle, Geneva bugle, standing bugle |
|
| Ajuga reptans L. |
Lamiaceae |
carpet bugle, common bugle |
|
| Allium schoenoprasum L. |
Liliaceae |
chives |
|
| Amaranthus cruentus L. |
Amaranthaceae |
blood amaranth, caterpillar amaranth, purple amaranth, red amaranth |
|
| Anchusa arvensis (L.) M.Bieb. |
Boraginaceae |
Annual bugloss, small bugloss |
|
| Anchusa officinalis L. |
Boraginaceae |
common alkanet, common bugloss |
|
| Anemone acutiloba (DC.) G.Lawson |
Ranunculaceae |
sharp-lobed hepatica |
|
| Anemone americana (DC.) H.Hara |
Ranunculaceae |
round-lobed hepatica |
|
| Anemone caroliniana Walter |
Ranunculaceae |
Carolina anemone, prairie anemone |
|
| Anemone patens L. var. multifida Pritz. |
Ranunculaceae |
American pasqueflower, prairie-smoke |
|
| Aquilegia vulgaris L. |
Ranunculaceae |
European columbine, garden columbine |
|
| Arctium lappa L. |
Asteraceae |
great burdock |
|
| Arctium minus Bernh. |
Asteraceae |
common burdock, lesser burdock |
|
| Arctium tomentosum Mill. |
Asteraceae |
cotton burdock, hairy burdock, woolly burdock |
|
| Asclepias purpurascens L. |
Asclepiadaceae |
purple milkweed |
|
| Aster ciliolatus Lindl. |
Asteraceae |
Lindley's aster, northern heart-leaved aster |
|
| Aster cordifolius L. |
Asteraceae |
common blue heart-leaved aster, common blue wood aster |
|
| Aster dumosus L. var. strictior Torr. & A.Gray |
Asteraceae |
bushy aster, long-stalked aster, rice-button aster |
|
| Aster laevis L. var. laevis |
Asteraceae |
smooth aster, smooth blue aster |
|
| Aster linariifolius L. |
Asteraceae |
flax-leaved aster, stiff aster |
|
| Aster longifolius Lam. |
Asteraceae |
long-leaved aster, long-leaved blue aster |
|
| Aster novae-angliae L. |
Asteraceae |
New England aster |
|
| Aster oblongifolius Nutt. |
Asteraceae |
aromatic aster |
|
| Aster oolentangiensis Riddell |
Asteraceae |
azure aster, prairie heart-leaved aster, sky-blue aster |
|
| Aster prenanthoides Muhl. ex Willd. |
Asteraceae |
crooked aster, crooked-stem aster, zigzag aster |
|
| Aster puniceus L. |
Asteraceae |
bristly aster, purple-stem aster, swamp aster |
|
| Aster sericeus Vent. |
Asteraceae |
silky aster, western silvery aster |
|
| Aster shortii Lindl. |
Asteraceae |
Midwestern blue heart-leaved aster, Short's aster |
|
| Aster X amethystinus Nutt. (pro sp.) |
Asteraceae |
amethyst aster |
|
| Astragalus alpinus L. var. alpinus |
Fabaceae |
alpine milk-vetch |
|
| Bacopa rotundifolia (Michx.) Wettst. |
Scrophulariaceae |
disc water-hyssop |
|
| Baptisia australis (L.) R.Br. ex W.T.Aiton |
Fabaceae |
blue false indigo |
|
| Blephilia ciliata (L.) Benth. |
Lamiaceae |
downy pagoda-plant, downy wood mint, Ohio horsemint |
|
| Callirhoe alcaeoides (Michx.) A.Gray |
Malvaceae |
light poppy mallow, pale poppy mallow, purple poppy mallow |
|
| Campanula americana L. |
Campanulaceae |
American bellflower, tall bellflower |
|
| Campanula aparinoides Pursh |
Campanulaceae |
marsh bellflower |
|
| Campanula aparinoides Pursh var. aparinoides |
Campanulaceae |
marsh bellflower |
|
| Campanula aparinoides Pursh var. grandiflora Holz. |
Campanulaceae |
marsh bellflower |
|
| Campanula glomerata L. |
Campanulaceae |
clustered bellflower, Dane's blood |
|
| Campanula latifolia L. |
Campanulaceae |
giant bellflower |
|
| Campanula persicifolia L. |
Campanulaceae |
peach-leaved bellflower |
|
| Campanula rapunculoides L. |
Campanulaceae |
creeping bellflower, European bellflower, rover bellflower |
|
| Campanula rotundifolia L. |
Campanulaceae |
bluebell, bluebell bellflower, harebell |
|
| Cardamine douglassii (Torr.) Britton |
Brassicaceae |
limestone bitter-cress, purple spring-cress |
|
| Cardamine maxima (Nutt.) A.W.Wood |
Brassicaceae |
large toothwort, three-leaved toothwort |
|
| Centaurea biebersteinii DC. |
Asteraceae |
spotted knapweed |
|