长流苏龙胆 chang liu long dan

Perennials 8-25 cm tall, with short slender stolons. Stems erect, slender, few branched, glabrous. Basal leaves withered at anthesis; petiole 1-2 mm; leaf blade ovate-elliptic to ovate, 6-8 × 3-4.5 mm, abaxially glabrous, adaxially densely and minutely papillate, apex obtuse; veins 1-3, distinct, slender. Stem leaves spreading; petiole tube 0.5-1 mm; leaf blade narrowly elliptic, ovate-elliptic, or ovate, 3-7 × 1-2.5 mm, much shorter than internodes, base rounded to cordate, margin ciliolate, apex acute; veins 1-3, distinct, slender, abaxially glabrous, adaxially densely and minutely papillate. Flowers few. Pedicel 0.5-1.5 cm, glabrous. Calyx tubular, 3-4 mm; lobes filiform-subulate, 1-1.5 mm, base 0.5-1 mm wide, apex acuminate, midvein prominent. Corolla pale blue to blue, tubular to narrowly obconic, 1.2-1.4 cm; lobes ovate-elliptic to ovate, 2.5-3.5 mm, margin entire, apex obtuse; plicae ovate, 1.5-3 mm, deeply 2cleft, margin of both segments filiform fringed. Stamens inserted at middle of corolla tube, equal; filaments 2-3 mm; anthers ellipsoid, 0.8-1 mm. Style 1.5-2 mm; stigma lobes oblong. Capsules narrowly obovoid to obovoid, 4-5 mm; gynophore to 1.2 cm. Seeds light brown, ellipsoid to ovoid, 1-1.2 mm. Fl. and fr. Aug-Sep.

Grassland slopes, meadow bogs; 2900-4100 m. SE Xizang, NW Yunnan [NE Myanmar].