Herbs, ?biennial, 25-40 cm tall. Stems many from base, ?decumbent, leafy and branched throughout. Leaves scattered; petiole 2-5 cm (upper shorter, lower longer), at base with membranous sheath (sheath of upper leaves more rounded to auriculate); blade glaucous abaxially, green adaxially, 3-6 × 4-5 cm, biternate; primary leaflets shortly petiolate; ultimate leaflets shallowly 3-fid, cuneate at base, deeply dentate; teeth subobtuse, mucronate. Raceme lax, 5-9-flowered; bracts shortly stalked, 5-10 mm, deeply flabellate-divided into numerous acute lobes, lowermost bracts sometimes like upper leaf. Pedicel 3-6(-10) mm in flower, at fruiting 10(-15) mm. Sepals 3-4 × ca. 4 mm, deeply and richly laciniate-dentate. Corolla pale purple, darker at apex. Outer petals emarginate, with short mucro in notch, dorsally with short high crest not reaching apex; upper petal ca. 20 mm; spur arcuately downcurved, ca. 11 mm, slender; nectary ca. 1/5 as long as spur; lower petal ca. 11 mm, almost straight; inner petals 8-9 mm. Stigma broadly rounded with 8 distinct simple marginal papillae; geminate papillae lateral (clearly submarginal/laminal) and on basal lobes. Capsule linear to narrowly oblong, 19-21 × 1.5-2 mm, 12-seeded, not sharply reflexed from tip of pedicel; style ca. 2.5 mm. Seeds in 1 row, smooth, flattened, keeled, ca. 1.5 mm; caruncle small. Fl. and fr. May.
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