髯毛龙胆 ran mao long dan

Annuals 4.5-7 cm tall. Stems ascending, branched from base, papillate. Basal leaves withered at anthesis; petiole 2-3 mm; leaf blade ovate-elliptic to ovate, 5.5-7.5 × 2-4 mm, margin cartilaginous and ciliolate, apex acute and apiculate, veins 1-3. Stem leaves widely spaced, folded; petiole tube 0.5-1.5 mm; leaf blade linear to linear-lanceolate, 2.5-10 × 1-1.5 mm, margin ± ciliolate with lower stem leaves cartilaginous and upper stem leaves membranous, apex acuminate and apiculate, midvein distinct. Flowers few to many. Pedicel 2-4 mm, surrounded by upper leaves, papillate. Calyx tubular, 9-10 mm; lobes linear-lanceolate, 3.5-6 mm, margin ± ciliolate with basal half membranous and apical half cartilaginous, apex acuminate and apiculate, midvein prominent. Corolla blue-purple but throat white with dark spots, tubular, 1.7-2.1 cm, throat hairs ca. 2 mm and in 5 fascicles; lobes ovate-elliptic, 3-4 mm, margin entire, apex obtuse; plicae ovate, 2-2.5 mm, margin erose, apex obtuse. Stamens inserted at middle of corolla tube, equal; filaments 1-1.5 mm; anthers ellipsoid, 1-1.2 mm. Style filiform, 4-5 mm; stigma lobes broadly oblong. Capsules narrowly obovoid, 6-7 mm, conspicuously winged; gynophore 3.5-4.5 mm, stout. Seeds brown, narrowly ellipsoid, 0.9-1.1 mm. Fl. and fr. Aug-Oct.

Grassland slopes, forests; 3100-4000 m. SE Xizang, NW Yunnan [Bhutan, N Myanmar].