ARABIS HIRSUTA (L.) Scop. var. PYCNOCARPA (M. Hopkins) Rollins Western Hairy Rock Cress FAMILY: Cruciferae (Brassicaceae) SYNONYMS: Arabis ... more>>
ARABIS HIRSUTA (L.) Scop. var. ADPRESSIPILIS (M. Hopkins) Rollins Southern Hairy Rock Cress FAMILY: Brassicaceae (Cruciferae) SYNONYMS: Arabis ... more>>
ARABIS LYRATA L. Lyre-leaved Rock Cress FAMILY: Brassicaceae (Cruciferae) HABIT: Tufted biennial or perennial; flowers April-May, fruits May-July. ... more>>
ARALIA HISPIDA Vent. Bristly Sarsaparilla FAMILY: Araliaceae HABIT: Perennial herb or semi-woody shrub to 1 m. from a stout rhizome; flowering ... more>>
ARABIS PATENS Sullivant Spreading Rock Cress FAMILY: Cruciferae (Brassicaceae). HABIT: Biennial to perennial herb to 6 dm.; flowering May, June; ... more>>
ARETHUSA BULBOSA L. Dragon's-mouth FAMILY: Orchidaceae HABIT: Herbaceous perennial, 0.5-4.0 dm.; arising from a small corm loosely attached to the ... more>>
ARCTOSTAPHYLOS UVA-URSI (L.) Spreng. Bearberry FAMILY: Ericaceae SYNONYMS: Uva-ursi uva-ursi (L.) Britt. HABIT: Prostrate evergreen shrub with ... more>>
AMELANCHIER SANGUINEA (Pursh) DC. Rock Serviceberry FAMILY: Rosaceae HABIT: Erect to straggling shrub or small tree to 3 m.; flowering May, June; ... more>>
ACER PENSYLVANICUM L. Striped Maple FAMILY: Aceraceae HABIT: Slender, deciduous understory tree to 12 m.;flowering May, June; fruiting June, July. ... more>>
ACORUS AMERICANUS Raf. American Sweet Flag FAMILY: Acoraceae HABIT: Rhizomatous perennial, leaves up to 1.45 m in length; flowering late spring to ... more>>
ANDROMEDA GLAUCOPHYLLA Link Bog-rosemary FAMILY: Ericaceae HABIT: Low, spreading evergreen shrub, 1-7 dm; flowers May-June, fruits July-Sept. ... more>>
ANDROPOGON GLOMERATUS (Walter) BSP Bushy Broom-sedge FAMILY: Poaceae (Gramineae) SYNONYMS: Andropogon virginicus L. var. abbreviatus (Hack.) Fern. & ... more>>
ANDROSACE OCCIDENTALIS Pursh Western Rock-jasmine FAMILY: Primulaceae HABIT: Dwarf annual, scapes 2-5 cm from a rosette of tiny leaves; flowering and ... more>>
ANEMONE CYLINDRICA Gray Prairie Thimbleweed FAMILY: Ranunculaceae HABIT: Erect, herbaceous perennial, 3-10 dm.; flowering June-August; fruiting ... more>>
AMMOPHILA BREVILIGULATA Fern. American Beach Grass FAMILY: Gramineae (Poaceae) HABIT: Herbaceous, extensively rhizomatous perennial, 5-10 dm.; ... more>>