密叶龙胆 mi ye long dan

Perennials 4-6 cm tall. Stolons to 15 cm, much branched. Stemless or stems very short, erect, simple. Basal leaves withered, persistent. Stem leaves crowded and surrounding flowers; petiole 4-8 mm; leaf blade linear-elliptic to lanceolate, 2-4 cm × 3-5 mm, base narrowed, margin distinctly cartilaginous, apex acuminate to obtuse, vein 1. Flowers solitary, rarely to 3 and crowded. Calyx obconic; tube membranous; lobes narrowly oblong to oblanceolate, 8-10 mm, margin distinctly cartilaginous, apex acute to obtuse, vein distinct inside. Corolla pale blue, broadly tubular to tubular-campanulate, 2.5-2.8 cm; lobes broadly ovate, 4-6 mm, margin entire, apex rounded and cuspidate; plicae broadly ovate to semiorbicular, 2-3 mm, margin entire, apex rounded. Stamens inserted at basal part of corolla tube, unequal; filaments 2-2.2 cm; anthers ellipsoid, 2-3 mm. Style 8-10 mm, linear; stigma lobes oblong. Fl. Apr.

* Sunny limestone cliffs; 3000-3400 m. NW Yunnan.