333. Corydalis acuminata Franchet, J. Bot. (Morot). 7: 285. 1894.
川东紫堇 chuan dong zi jin
Corydalis acuminata subsp. hupehensis C. Y. Wu.
Herbs, perennial, 15-30(-50?) cm tall. Rhizome short, with apical leaf rosette with fleshy petiolar bases, forming bulb 1-2 × 1-3 cm. Stems 2-5, erect, simple or branched, with 2 or 3 leaves. Basal leaves several; petiole 5-10 cm; blade glaucous abaxially, green adaxially, broadly ovate-triangular, 2.5-5 × 2-5 cm, triternate; pinnae petiolulate; pinnules sessile, deeply 2-6-divided; lobes oblanceolate to narrowly oblong, obtuse to acute. Cauline leaves: lower ones petiolate, uppermost leaves nearly sessile, like basal leaves. Raceme ca. 5 cm, 5-13-flowered; bracts 10-15 mm, with cuneate base widened into deeply palmatisect blade, lower bract larger and more deeply divided; uppermost bract oblanceolate, slightly divided to entire. Pedicel 10-15 mm, 15-25 mm in fruit. Sepals 0.5-1 × 0.5-1 mm, dentate. Corolla purple; outer petals navicular, acute, shortly acuminate, without crest (rarely with low crest?); upper petal 15-20 mm; spur downcurved at apex, cylindric, 7-10 mm; nectary 1/3-1/2 as long as spur; lower petal 10-12 mm, lower 1/2 broadly saccate (sometimes forming spurlike process), except for very short narrow part at very base; inner petals 8-11 mm. Stigma circular, with 6-8 marginal simple papillae, and with geminate papillae at base. Capsule reflexed from straight pedicel, elliptic, 15-20 × 3-3.5 mm, 15-25-seeded, sometimes with faint rows of papillae; style ca. 2.5 mm. Seeds ca. 1 mm, smooth. Fl. and fr. Apr-Aug.
● Secondary grasslands, wastelands, evergreen and deciduous broad-leaved mixed forests, slopes, roadsides; (200-)1500-3000 m. Chongqing, NE Guizhou, W Hubei, S Shaanxi, E Sichuan.