Cardamine bulbosa (Schreber ex Muhlenberg) B.S.P., Prelim. Cat. 4. 1888; Arabis bulbosa Schreber ex Muhlenberg, Trans. Amer. Philos. Soc. 3: 174. 1793; Dracamine bulbosa (Schreber ex Muhlenberg) Nieuwland, Amer. Midl. Naturalist 4: 40. 1915. TYPE:

Arabis rhomboidea Persoon, Syn. Pl. 2: 204. 1807; C. rhomboidea (Persoon) de Candolle, Syst. Nat. 2: 246. 1821; Dentaria rhomboidea (Persoon) Greene, Pittonia 3: 124. 1896. TYPE :

Cardamine rhomboidea var. hirsuta O. E. Schulz, Bot. Jahrb. Syst. 32: 426. 1903. TYPE:

Cardamine rhomboidea var. parviflora O. E. Schulz, Bot. Jahrb. Syst. 32 : 426. 1903. TYPE:

Cardamine rhomboidea var. pilosa O. E. Schulz, Bot. Jahrb. Syst. 32: 426. 1903. TYPE:

Herbs, perennial, glabrous or sparsely pubescent distally. Rhizomes fleshy, tuberous at stem base and sometimes at intervals, subglobose, lobed, 4–15 mm in diam.; stolons absent. Stems (1–)2–6 dm, erect, simple, glabrous or sparsely pubescent on distal half with trichomes 0.02–0.1 mm. Rhizomal leaves simple, (2–)4–13(–16) cm; petiole (1.5–)2.5–10(–13) cm; blade reniform to cordate or ovate, rarely oblong, (1–)2–4(–6) cm, base obtuse to cordate, margin repand or entire, rarely shallowly dentate, not puberulent; cauline leaves (2–)4–10(–14), simple, not auriculate at base, middle ones short petiolate, 3–6(–9) × 1–3(–4.5) cm, upper ones sessile, ovate to oblong or oblong-linear to lanceolate, entire, repand, or dentate, minutely pubescent along margin, Racemes ebracteate; fruiting pedicels ascending to divaricate, (1–)1.5–2.2(–3) cm. Sepals oblong, 2.5–4.5 × 1.5–2 mm, erect, glabrous, base of lateral pair not saccate; petals white or very rarely pale pink, obovate, (6–)7–12(–16) × 3–5 mm, short clawed, apex rounded; median filament pairs 4.5–7 mm, lateral pair 2–3.5 mm; anthers oblong, 1–1.5 mm. Fruit linear, 2–3.5(–4) cm × 1.4–1.7 mm; valves glabrous; style 2–4(–5) mm; ovules and seeds 14–24 per fruit. Seeds dark orange to greenish yellow, oblong to circular, 1.7–2.1 × 1–1.4 mm. 2n = 16, 56, 64, 80, 96, 112.

Flowering: Mar–Jun.

Habitat: wet grounds, low woodlands, moss hummocks, alluvial woods, grassy floodplains, wet pastures, meadows, pine lands, creek bottoms, stream banks, sandy bottoms, ditches, mesic or wet forests, swamps, marshes, seepy bluffs.

Elevation: 0–850.

Distribution: Canada (Manitoba, Ontario, Quebec), United States (Alabama, Arkansas, Connecticut, Delaware, District of Columbia, Florida, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachussets, Michigan, Minnesota, Mississippi, Missouri, Nebraska, New Hampshire, New Jersey, New York, North Carolina, Ohio, Oklahoma, Pennsylvania, South Carolina, E South Dakota, Texas, Tennessee, Vermont, Virginia, West Virginia, Wisconsin).