打箭炉龙胆 da jian lu long dan

Annuals 3-5 cm tall. Stems prostrate to ascending, branched from base, glabrous. Basal leaves withered at anthesis; petiole 1-2 mm; leaf blade ovate-lanceolate to ovate, 6-10 × 3-4 mm, glabrous, margin cartilaginous and ciliolate, apex acute and apiculate, midvein prominent. Stem leaves 3-6 pairs; petiole tube 1.5-2 mm; leaf blade ovate or toward stem base spatulate, 3-6 × 1-1.5 mm, abaxially papillate, adaxially glabrous, margin broadly membranous or basally cartilaginous, apex acute to obtuse, midvein abaxially prominent. Flowers few. Pedicel 2-3 mm, surrounded by leaves, glabrous. Calyx narrowly obconic, 5-6 mm, outside densely papillate; lobes ovate-lanceolate to ovate, 2-3.5 mm, margin broadly membranous, apex acute and apiculate, midvein prominent. Corolla blue, tubular, 1-1.2 cm; lobes ovate, 1.5-2 mm, margin entire, apex obtuse and mucronate; plicae broadly ovate, 0.8-1 mm, margin entire, apex obtuse. Stamens inserted at middle of corolla tube, equal; filaments 2-3 mm; anthers ellipsoid, 1.2-1.5 mm. Style 0.5-1 mm; stigma lobes linear. Capsules narrowly obovoid, 4-5 mm; gynophore to 7 mm. Seeds light brown, ellipsoid, 1-1.2 mm. Fl. and fr. Apr-Jul.

* Along streams, roadsides, valleys, open grassy hillside; 3300-5000 m. W Sichuan, Xizang.