Cardamine rotundifolia
Fl. Bor.-Amer. 2: 30. 1803.
Perennials; glabrous throughout. Rhizomes slender, to 2 mm diam. Stems usually procumbent, sometimes erect, (not flexuous), unbranched or branched, (1–) 1.5–3 (–5) dm. Rhizomal leaves absent. Basal leaves (soon withered), not rosulate. Cauline leaves simple, petiolate; petiole (0.3–) 0.5–2.5 (–4) cm, base not auriculate; blade oblong, ovate, suborbicular, or cordate, (0.5–) 1–4.5 (–5.5) cm × (5–) 10–40 (–54) mm, base cordate, rounded, or truncate, margins entire, repand, or sinuate, (distally with shorter petiole, blade smaller). Racemes ebracteate. Fruiting pedicels divaricate to ascending, (6–) 10–15 (–20) mm. Flowers: sepals oblong, 2–3 × 1–1.7 mm, lateral pair not saccate basally; petals white, broadly oblanceolate, spreading, 5–7 (–8) × 2–3 mm, (not clawed, apex rounded); filaments: median pairs 3.5–4.5 mm, lateral pair 2.7–3.5 mm; anthers oblong, 0.8–1.2 mm. Fruits linear, (torulose), 1–1.5 (–2) cm × 0.8–1.1 mm; ovules 40–80 per ovary; style 1.5–2.5 mm. Seeds brown, oblong to ovoid, 0.9–1.1 × 0.5–0.6 mm.
Phenology: Flowering Apr–Jun.
Habitat: Stream banks, swamps, low woodland, wet rocky areas, seepage areas
Elevation: 150-400 m
Distribution
Del., Ga., Ky., Md., N.J., N.Y., N.C., Ohio, Pa., Tenn., Va., W.Va.
Discussion
Selected References
None.
Lower Taxa
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