166. Corydalis bimaculata C. Y. Wu & Z. Y. Su in C. Y. Wu, Fl. Xizang. 2: 305. 1985.
双斑黄堇 shuang ban huang jin
Herbs, perennial, caespitose, 12-20 cm tall. Rhizome long, narrow, with distant scales and buds, apically with some long remnants of old petioles. Stems few from radical leaf axils, usually simple, with 2 or 3 small leaves. Radical leaves many; petiole vaginate at base, 3-6 cm; blade glaucous abaxially, deep green adaxially, oblong, 4-8 × 1.5-3 cm, bipinnate; pinnae 4-7 pairs, shortly petiolulate; pinnules 1 or 2 pairs, sessile, deeply 2-4-cleft; lobes lanceolate or obovate, ca. 7 × 2-3 mm, acute. Cauline leaves much smaller and less divided, shortly stalked. Raceme 2-4 cm, 5-10-flowered; lower bracts shortly stalked, deeply cut into acute lanceolate lobes; upper bracts lanceolate, entire, all slightly shorter than pedicels. Lower pedicels 10-15 mm, upper ones 5-10 mm, soon arcuately recurved. Sepals small, dentate. Corolla yellow; inner petals: apex sometimes with 2 purple flecks; outer petals with rhombic-acute limb and broad truncate crest; upper petal 14-16 mm, crest ca. 2 mm wide, decurrent on spur; spur straight or slightly upturned, tapering toward apex, 6-8 mm; nectary nearly extended to spur end; lower petal 10-11 mm; claw ca. as long as petal lobe, base suddenly contracted; inner petals ca. 9 mm, claw slightly shorter than limb. Style ca. 3 mm; stigma nearly square, apex with 4 short pillar-form papillae, laterally each side with 2 papillae, basal lobes absent.
● Stony slopes, ?shaded moist areas; 4000-4200 m. C and E Xizang.