长苞紫堇 chang bao zi jin

Herbs, perennial, 10-20 cm tall, glabrous; stems and petioles of radical leaves attenuate to filiform underground base. Storage roots fascicled, 10-40 × 2-3 mm, attenuate to base; bulb prominent, 3-7 × 2-5 mm, of several fleshy pale ovate scales. Stems 1 to few, erect, slender, simple, with 1 leaf above middle. Radical leaves small; petiole 1-4 cm, thin; blade orbicular, ca. 1 × 1 cm, cut to base into 3-6 oblong lobes. Cauline leaves: petiole 0.5-2 cm; blade usually with 5 linear leaflets (ternate with binate lateral leaflets) 11-45 × 1-3 mm. Raceme corymbose, 1-2 cm, densely 2-4-flowered; lower bract similar to leaf, 3-5-parted with long linear lobes, 1-1.5 cm; upper bracts linear, 0.5-1 cm, entire. Pedicel erect, 8-12 mm, thin. Sepals ca. 0.5 mm, slightly dentate. Corolla violet-purple to sky blue; upper petal rhombic-acute, 14-15 mm, without crest; spur cylindric, 7-8 mm; nectary ca. 1/2 as long as spur; lower petal navicular, narrowly obovate, 9-11 mm, acute, without crest; inner petals 8-9 mm. Ovules ca. 20; stigma square with 4 marginal apical papillae; geminate papillae lateral and on well-developed basal lobes. Capsule pendent from erect pedicel, linear-oblong, ca. 10 × 1.5 mm. Fl. and fr. Jun-Sep.

● Open stony shale scree; 3500-4200 m. SE Xizang.