Baptisia australis (L.) R. Br. ex Ait. f. Blue false indigo Family: Fabaceae Synonyms: Sophora australis L. Description: Perennial herb to 1.5 m from ... more>>
Aureolaria pedicularia (L.) Raf. var. pedicularia (L.) Raf. Woodland Fern-leaf False Foxglove Family: Scrophulariaceae Synonyms: Gerardia pedicularia ... more>>
Baptisia lactea (Raf.) Thieret Prairie False Indigo Family: Fabaceae Synonyms: Baptisia leucantha T. & G., Baptisia alba (L.) Vent. Description: ... more>>
ARISTIDA PURPURASCENS Poir Purple Triple-awned Grass FAMILY: Gramineae (Poaceae) HABIT: Herbaceous caespitose perennial, 3-10 dm.; flowering ... more>>
ARISTIDA NECOPINA Shinners False Arrow-feather FAMILY: Gramineae SYNONYMS: Aristida intermedia Scribner & Ball (misapplied, Voss 1972). Aristida ... more>>
Aronia arbutifolia (L.) Pers. Red Chokeberry Family: Rosaceae Synonyms: Photinia pyrifolia (Lam.) Robertson & Phipps; Pyrus arbutifolia (L.) L. f. ... more>>
ARMORACIA LACUSTRIS (A. Gray) Al-Shehbaz. Lake Cress FAMILY: Cruciferae (Brassicaceae) SYNONYMS: Armoracia aquatica (Eat.) Wieg. HABIT: Herbaceous ... more>>
ASCLEPIAS AMPLEXICAULIS Smith Blunt-leaved Milkweed FAMILY: Asclepiadaceae HABIT: Herbaceous perennial with milky sap, 4-9 dm.; flowering May-July. ... more>>
ARTEMISIA CAMPESTRIS L. Beach Wormwood FAMILY: Asteraceae (Compositae) SYNONYMS: Artemisia caudata Michx. HABIT: Erect, biennial herb, to 1 m; ... more>>
ASPLENIUM BRADLEYI D.C. Eaton Bradley's Spleenwort FAMILY: Aspleniaceae (Polypodiaceae) HABIT: Tufted perennial, fronds evergreen, 0.4-2 dm.; ... more>>
ASCLEPIAS VARIEGATA L. White Milkweed FAMILY: Asclepiadaceae HABIT: Erect herbaceous perennial with milky sap, 3-9 dm.; flowering late May-July; ... more>>
ASTRAGALUS CANADENSIS L. Canada Milk-vetch FAMILY: Fabaceae HABIT: Rhizomatous perennial herb, up to 15 dm; flowering late June to late July; ... more>>
AUREOLARIA PEDICULARIA (L.) Raf. var. AMBIGENS (Fern.) Farwell Prairie Fern-leaved False Foxglove FAMILY: Scrophulariaceae SYNONYMS: Gerardia ... more>>
ARABIS DRUMMONDII Gray Drummond's Rock Cress FAMILY: Cruciferae (Brassicaceae) HABIT: Biennial herb to 9 dm.; flowering May-July; fruiting ... more>>
ARABIS DIVARICARPA A. Nels. Limestone Rock Cress FAMILY: Cruciferae (Brassicaceae) HABIT: Erect biennial herb to 1 m.; flowering May-July; fruiting ... more>>