阿里山龙胆 a li shan long dan

Gentiana caespitosa Hayata (1908), not M. Martens & Galeotti (1844).

Perennials 4-10 cm tall, with short slender stolons. Stems ascending to erect, rigid, basally much branched and cespitose, glabrous. Leaves crowded, recurved; petiole tube 1-1.5 mm, papillate on margin and abaxially; leaf blade ovate-elliptic to ovate, 5-8 × 2.5-3.5 mm, leathery, rigid, margin thick cartilaginous and ciliolate, apex obtuse, midvein distinct. Flowers subsessile. Calyx funnelform, 7-9 mm; lobes ovate-lanceolate to triangular, 2-3 mm, leathery, margin smooth, apex acute, midvein prominent. Corolla purple, funnelform, 1.7-2 cm; lobes ovate, 3-5 mm, margin entire, sometimes erose, apex obtuse; plicae ovate, 1.5-2 mm, margin entire, apex obtuse. Stamens inserted at middle of corolla tube, equal; filaments 4-4.5 mm; anthers ellipsoid, 2-2.2 mm. Style 2.5-3 mm; stigma lobes oblong. Capsules narrowly obovoid, 5-6 mm; gynophore to 2 cm. Seeds brown, ellipsoid, 1-1.2 mm. Fl. and fr. Aug-Oct.

* Alpine grasslands; 2700-3700 m. Taiwan.