巴东紫堇 ba dong zi jin

Herbs, ?biennial, 10-20 cm tall, glabrous, branched from base. Leaves crowded at base of main basal branches, with broadly sheathing petioles 4-10 cm; upper leaves few, similar; blade triangular, 2-4 × 3-5 cm, (bi-)triternate to sub-bi-tripinnate; median leaflet longer petiolulate; ultimate leaflets cuneate at base, deeply crenate-dentate/lobate into rounded to oblong obtuse mucronate teeth. Raceme very lax, ca. 5 cm, 4-8-flowered; lower bract like leaf, to 4 cm including petiole ca. 2 cm, upper progressively much smaller, 0.5-1 cm. Lower pedicels 15-20 mm, upper ones 5-10 mm. Sepals 1.5-2 × 1-3 mm, deeply laciniate-dentate. Flowers lavender. Outer petals dentate, obtuse to subacute, usually with short crest not reaching apex; upper petal 15-19 mm; spur straight, conical, 8-12 mm; nectary 1/5-1/4 as long as spur; lower petal 9-10 mm, broadly saccate at center and with an additional pouch at base; inner petals ca. 8 mm. Stigma wider than long, with 4 simple marginal papillae; geminate papillae in basal corners. Capsule broadly obovoid, 8-12 × 3-5 mm, 4-7-seeded; style 2.5-3 mm.

● Forest understories; ca. 2100 m. Chongqing (Wushan), N Guizhou, W Hubei, S Shaanxi, SE Sichuan (Leibo).