贺兰山延胡索 he lan shan yan hu suo

Corydalis pauciflora (Stephan ex Willdenow) Persoon var. alaschanica Maximowicz, Enum. Pl. Mongol. 37. 1889; C. pauciflora var. holanschanica Fedde.

Herbs, perennial. Tuber cylindric or oblong, branched or not. Stems 5-15 cm, soft, branched, with leaves. Leaves pale glaucous abaxially, green adaxially, ternate; terminal leaflet petiolulate, lateral ones nearly sessile; leaflets deeply 3-5-divided, lobes obovate obtuse. Racemes dense, ca. 5-flowered; bracts ovate, 4-5 mm, subacute. Pedicel 5-10 mm. Flowers amaranth to blue. Sepals rounded, 0.5-1 mm, shallowly dentate. Outer petals broad, acute, without or with short crest; upper petal 19-23 mm; spur straight to subsigmoidally curved, cylindric, 9-11 mm; nectary extended through 1/3-2/3 of spur; lower petal with broad rhombic subacute limb and narrow claw, sometimes with small subacute spurlet at base; inner petals 8-10 mm. Stigma square with 4 apical papillae and 2 small geminate papillae on each side. Capsule obovoid-oblong, 10-12 × ca. 3 mm, ca. 10-seeded.

● Rock crevices; 1700-3400 m. Gansu (Helan Shan), Nei Mongol (Helan Shan), Ningxia (Helan Shan).