- Scientific Name: Corydalis gracillima C. Y. Wu ex Govaerts
- Ref: World Checkl. Seed. Pl. 3(1): 20. 1999.
- Chinese Common Name: 纤细黄堇 xiānxì huángjǐn
- Family: Papaveraceae
- Genus: Corydalis
- Distribution: Disturbed stony hillsides, roadside gravel, grassy slopes, mossy cliffs; 2500-4500 m. W Sichuan, SE Xizang (Zayü), Yunnan [N Myanmar].
Herbs, annual or biennial, 10-30(-60) cm tall, with simple taproot, never with adventitious fleshy roots. Stems weak, diffusely branched and leafy throughout. Petiole of lower leaves 1.5-7 cm, upper ones 1-4 cm; blade glaucous abaxially, green to glaucous adaxially, 1-3(-5) × 1-3(-6) cm (larger in shade), 2-3 × ternate; primary pinnae long stalked; leaflets ± deeply divided into 2-4 obovate to oblanceolate lobes. Racemes subsecund, 3-9-flowered; bracts 3-8 mm, divided into 3-6 obovate lobes, or upper ones entire; lowermost often biternatisect into acute lobes. Pedicel strongly recurved in fruit, 4-8 mm. Sepals 0.5-1 mm, rounded, circumdentate. Corolla golden yellow or white (often mixed populations); apex of inner petals blackish purple; outer petals with broad limb, acute to shortly acuminate at tip; upper petal with crest not reaching apex, long decurrent on spur; spur upcurved, 5-7 mm, narrow; nectary 1/3-1/2 as long as spur; inner petals 4.5-5 mm; lower petal with narrow claw and rhombic acute limb, straight or sometimes saccate at base, not or very narrowly crested. Stigma with prominent geminate papillae and 4 stipitate apical papillae. Fruit narrowly obovoid, 6-10 × 2-2.5 mm, 7-14-seeded; style 1-1.5 mm. Seeds in 2 rows, ca. 0.8 mm, smooth, with short thick elaiosome. Self-compatible. (Flora of China)