Herbs, perennial, erect, 10-25(-35) cm tall; stems and petioles of radical leaves attenuate to filiform underground base. Storage roots oblong, 8-25 × 2-3 mm, terminal and lateral on thin often branched stalks 1-10 cm. Stems 1-5, simple, with 2 leaves in middle part. Radical leaves: petiole 6-19 cm; blade very glaucous abaxially, dark green adaxially, imparipinnate (or deeply pinnatifid) with 2 or 3 pairs of leaflets; basal pair sometimes binate, 1.5-5 × 0.1-0.5(-1) cm, slightly thick, firm, abaxially with thick and conspicuously raised parallel veins nearly always with coarse 1-celled hairs or papillae, lanceolate, mucronate. Cauline leaves like radical, sessile or subsessile. Raceme 4-11-flowered; bracts 5-11 mm, lanceolate-acuminate, entire, or lower ones usually with broader base with long lateral teeth; sometimes all flabellate-divided with acute narrow lobes. Pedicel 4-10 mm, at fruiting recurved and 7-15 mm. Sepals 0.5-1 × 1-1.5 mm, dentate. Petals yellow, with distinct darker veins (rarely purple?); upper petal navicular-ovate, 15-20 mm, apex subobtuse, abaxial crest 1-1.5 mm wide, from apex extended to spur middle, margin undulate; spur slightly downcurved at tip, cylindric or slightly tapering, 9-11(-13) mm; nectary 1/2-2/3 as long as spur; lower petal navicular-obovate, 8-10 mm, abaxial crest short, without obvious claw; inner petals 7-8 mm. Stigma square; median 2 apical papillae distinct, lateral marginal papillae confluent; geminate papillae submarginal and on basal lobes. Capsule elliptic-obovoid, 10-19 × 3-4 mm, (2-)5-8-seeded; style 2.5-3 mm. Seeds in 2 rows, ca. 2 mm, smooth, with small cap-shaped elaiosome. Fl. Jun-Aug.
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