脊突龙胆 ji tu long dan

Annuals or biennials, 2-4.5 cm tall. Stems purple, erect, branched from base, with flowering branches crowded together, densely papillate. Basal leaves withered at anthesis; petiole 1-3 mm; leaf blade broadly ovate to suborbicular, 1-1.5 × 0.7-1 cm, margin cartilaginous and long irregularly ciliate, apex rounded, midvein crested and long irregularly ciliate. Stem leaves widely spaced basally and in middle, crowded apically, petiolate; leaf blade ovate-orbicular, 3-7 × 2-6 mm, margin broadly membranous and long irregularly ciliate, apex rounded, midvein crested and long irregularly ciliate. Flowers many, solitary or 2 or 3 crowded together, subsessile. Calyx narrowly obconic, 8-9 mm; lobes narrowly triangular, 5-6 mm, margin broadly membranous and long irregularly ciliolate, apex acute and apiculate, midvein crested and long irregularly ciliate. Corolla pale blue, tubular, 1-1.2 cm; lobes ovate-triangular, 2-2.5 mm, margin entire, apex acute and apiculate; plicae ovate, 0.8-1 mm, margin entire, apex obtuse. Stamens inserted at basal part of corolla tube, unequal; filaments 2.5-4 mm; anthers ellipsoid, 0.6-0.8 mm. Style 1.5-2 mm; stigma lobes oblong. Capsules narrowly obovoid, 5.5-6.5 mm; gynophore to 5 mm, stout. Seeds light brown, narrowly ellipsoid, 1-1.2 mm. Fl. and fr. Jul.

* Grassland slopes; ca. 4200 m. SE Xizang, NW Yunnan.