Cardamine flagellifera O. E. Schulz, Bot. Jahrb. Syst. 32: 405. 1903. TYPE:

Cardamine hugeri Small, Man. Fl. SE. U.S. 569. 1933; Crdamine flagellifera var. hugeri (Small) Rollins, Cruciferae Continental N. Amer. 274. 1993. TYPE:

Herbs, perennial, hirsute below, sparsely pubescent or glabrous above. Rhizomes fleshy, swollen and compact at stem base, producing many, slender, pubescent or glabrous stolons ca. 1 mm in diam. Stems 1–2.5 dm, erect, simple or rarely few branched above, sparsely to densely hirsute or pilose near base, sparsely so or glabrous distally. Rhizomal leaves simple or rarely 3-foliolate, (3–)6–16 cm; petiole (1.5–)4–13 cm; blade or terminal leaflet orbicular to reniform or broadly ovate, (1–)1.5–4.5 cm, petiolule 0.5–2 cm, base cordate, margin repand to coarsely crenate and apiculate at vein endings, sparsely pubescent or glabrous, not puberulent; lateral leaflets much smaller than terminal one, subsessile or on petiolules to 0.5 cm; cauline leaves 2–5, 3–5-foliotate; petiole 0.8–5 cm, base not auriculate; terminal lobe broadly ovate to suborbicular, 1.5–4(–5) × 1.2–3.5 cm, repand to coarsely creanate or slightly lobed, apiculate at vein endings, glabrous along margin, petiolule 0.5–1.5 cm; lateral leaflets similar to terminal but smaller, sessile or on petiolule to 0.5 cm. Racemes ebracteate; fruiting pedicels ascending to divaricate-ascending, 0.7–2 cm. Sepals oblong, 3–3.5 × 1–1.5 mm, ascending, base of lateral pair not saccate; petals white, oblanceolate, 5–6.5(–8) × 1.5–2.5 mm, not clawed, apex obtuse to subemarginate; median filament pairs 3.5–5 mm, lateral pair 2.5–3 mm; anthers oblong, 1.2–1.6 mm. Fruit linear, 1.5–2.5 cm × 1–1.2 mm; valves glabrous; style 1.2–2.5 mm; ovules and seeds 10–14 per fruit. Seeds brown, oblong, 1.2–1.7 × 0.8–1.1 mm.

Flowering: Mar–Jun.

Habitat: moist wooded slopes, gorges, wooded ravines, seepage places.

Elevation: 300–1000 m.

Distribution: United States (Georgia, North Carolina, South Carolina, Tennessee, West Virgina).