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Arabidopsis lyrata subsp. lyrata
Family: Brassicaceae
lyrate rockcress
Arabidopsis lyrata subsp. lyrata image
Biennials or perennials; caudex unbranched or with a root crown, often slender. Basal leaves: (petiole often hirsute); blade margins lyrate or lyrate-pinnatifid, terminal lobes distinct, (surfaces pubescent). Petals 6-8 mm. Fruits 0.8-1 mm wide; style 0.5-1 mm. 2n = 16, 32. Flowering Apr-Jul. Cliffs, ledges, thickets, stream and river banks, woods, limestone crevices and bluffs, sandstone hills and outcrops, serpentine rocks and barrens, shale, talus, sand dunes; 0-1000 m; Alta., B.C., Man., N.W.T., Ont., Sask.; Alaska, Conn., Del., D.C., Ill., Ind., Iowa, Md., Mass., Mich., Minn., Miss., Mo., N.J., N.Y., N.C., Ohio, Pa., Tenn., Vt., Va., W.Va., Wis.
From Flora of Indiana (1940) by Charles C. Deam
Found in very dry, sandy soil in black oak woods and fallow fields and on open wooded dunes and sandy, roadside knolls.