铺散黄堇 pu san huang jin

Herbs, (annual to) short-lived perennial, 20-70 cm tall, glabrous. Stems slender, weak, many branched from base, with many leaves. Petiole of lower leaves 2-10 cm, upper ones 0.5-3 cm; blade glaucous abaxially, 1-4 cm, thin, bi-(tri-)ternate; primary leaflets: petiolule 0.3-2 cm, ultimate leaflets shortly petiolate or sessile, deeply 2-5-divided; lobules obovate, obtuse, obscurely mucronate. Racemes 4-12-flowered; peduncle distinct; lower bracts divided; middle and upper bracts often entire, 2-8 mm. Pedicel 5-15 mm, slender, arcuately recurved in fruit. Sepals reniform, 0.5-1 mm, dentate. Corolla yellow; inner petals tipped with blackish purple; outer petals narrow, acute; upper petal with narrow crest; spur often upcurved, 5-6 mm, narrow; nectary ca. 1/2 as long as spur; lower petal usually straight, not crested, very rarely with a cornute minute spur at base; inner petals 4.5-5.5 mm. Stigma with 4 stalked apical papillae. Fruit narrowly obovoid to oblong, 8-10 × ca. 2 mm, 6-10-seeded; style 1.5-2 mm. Seeds uniseriate to sub-biseriate, 1-1.1 mm, smooth. Self-compatible. Fl. and fr. Jul-Oct.

Open grassy slopes, pastures, frequent in burned areas, understories of open subalpine coniferous forests, among shrubs; 2800-4700 m. S Xizang [Bhutan, India (Darjeeling, Sikkim), C and E Nepal].

Corydalis casimiriana subsp. casimiriana occurs in N India, Kashmir, and W Nepal.