西藏红萼黄堇 xi zang hong e huang jin

Corydalis longipes Candolle var. megalantha H. Chuang.

Herbs, (annual to) short-lived perennial, 20-70 cm tall, glabrous. Stems slender, weak, 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 3-8-flowered; bracts divided, or upper ones entire, 3-7 mm. Pedicel 5-15 mm, slender, recurved in fruit. Sepals red, 1-1.5 mm, finely dentate. Corolla bright yellow, all petals black tipped; upper petal narrowly crested; spur upcurved, ca. 7 mm; nectary ca. 3 mm; inner petals ca. 6 mm; lower petal with a minute cornute spur. Stigma with 4 stipitate apical papillae. Fruit obovoid, 7-9 × ca. 2 mm, to 15-seeded; style 1-1.5 mm. Seeds ca. 1.1 mm, smooth. Fl. and fr. Aug.

● Damp grassy stream banks; 4000-4200 m. SE Xizang (Mira La in Qusum, Nyingchi).

Corydalis rubrisepala subsp. rubrisepala occurs in NE India.