Herbs, erect, 30-120 cm tall. Roots many, when dried black-brown, linear, to 10 cm or more, stout. Stems strong, stout, when dried ridged, sparsely branched in upper 1/2, lower part usually without leaves. Radical leaves: petiole 20-30 cm; blade glaucous abaxially, green adaxially, broadly ovate, 6-12 cm, bi-to triternate; primary pinnae long petiolulate, ultimate leaflets entire or deeply cleft; lobules obovate or elliptic, margin entire, apex obtuse, mucronate. Cauline leaves 3-6, lower ones petiolate, upper ones subsessile, like radical leaves. Racemes simple or basally branched, often many together in a panicle, 10-25-flowered; bracts linear-lanceolate, 3-10 mm, entire. Pedicel 3-6 mm, thin, straight in flower, reflexed in fruit. Sepals caducous, broadly ovate, 0.5-1 × 1-1.5 mm, deeply dentate. Corolla yellow, fragrant; outer petals with dorsal crests reaching apex, subacute or shortly acuminate; upper petal 16-20 mm, crest decurrent on spur or crest absent; spur upcurved, cylindric, 9-14 mm; nectary extended through 3/4-9/10 of spur and thin, or absent; inner petals 7-9 mm, claw nearly equal to petal lobes. Stigma with median apical lobes long stalked, basal lobes moderately developed. Capsule linear-oblong, 12-17 × ca. 1.5 mm, 5-8-seeded; style ca. 3.5 mm. Seeds black, shiny, elliptic, ca. 1 × 1.3 mm. Fl. and fr. May-Sep.
Home