Herbs, perennial, 25-40 cm tall; stems and petioles of radical leaves attenuate to filiform underground base. Roots and radical leaves not seen. Stems slender, simple, with 2 or 3 leaves in upper 1/3. Cauline leaves sessile or lower petiole 0.5-1(-4) cm; blade glaucous abaxially, green adaxially, with 2 or 3 pairs of shortly stalked to sessile primary pinnae ternately to binately deeply cut into linear lobes 20-50 × 1-2 mm. Raceme 5-10 cm, 10-20-flowered; bracts lanceolate, 10-20 × 1-2 mm, entire or rarely with a few sharp teeth at base, lower long acuminate. Pedicel 12-25 mm, slender, arcuate in fruit. Sepals 0.3-1 × ca. 1 mm, deeply dentate. Corolla yellow; outer petals with broad (2-3.5 mm) obtuse crests; upper petal 19-22 mm, broadly spreading, acuminate; crest overtopping apex and decurrent on spur; spur slightly upturned and slightly downcurved at tip, cylindric, 12-15 mm; nectary 2/5-2/3 as long as spur; lower petal broadly rhombic with spreading undulate margins, ca. 13 mm, distal 1/2 reflexed, lower 1/2 broadly saccate; inner petals 10-11 mm. Stigma square; median 2 apical papillae distinct, lateral marginal papillae broad, indistinct; geminate papillae submarginal, lateral and on well-developed basal lobes; basal lobe with small peg. Fruit not seen; style ca. 3.5 mm. Fl. Jul-Aug.
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