Comastoma pedunculatum (Royle ex G. Don) Holub

Annuals 5-15 cm tall. Stems ascending, subquadrangular, branched from base. Basal leaves few, short petiolate; leaf blade oblong-spatulate, 0.5-1.6 cm × to 3 mm including petiole, base narrowed, apex obtuse to rounded, midvein distinct. Stem leaves sessile, elliptic to ovate-oblong, 2-12 × 2-5 mm, base obtuse, apex acute, midvein indistinct. Flowers terminal, solitary, often 5merous on main stem but 4merous on lateral branches. Pedicel spreading, to 20 cm, subquadrangular. Calyx 1.5-4 mm, tube shallowly saccate at base; lobes slightly unequal, lanceolate to ovate-lanceolate, margin sometimes blackish, apex acuminate to acute. Corolla dark blue to blue-purple, with pale yellow base and dark blue veins, tubular, 6-10 × ca. 4 mm, to 1.8 cm in fruit; lobes suberect, ovate-oblong, 3-11 mm, scale 1, fimbriae 2-2.5 mm, apex obtuse. Nectaries 10. Stamens inserted at middle of corolla tube; filaments ca. 3 mm, base decurrent into wings of corolla tube; anthers yellow, ellipsoid, ca. 1 mm. Style indistinct; stigma lobes oblong. Capsules exserted from persistent corolla. Seeds dark brown, subglobose; seed coat smooth. Fl. and fr. Jul-Oct.

Gansu, Qinghai, W Sichuan, Xizang, NW Yunnan [Bhutan, India, Kashmir, Nepal, Sikkim].

River banks, alpine meadows; 3200-4800 m.

Eurythalia pedunculata Royle ex D. Don, London Edinburgh Philos. Mag. & J. Sci. 8: 76. 1836; Gentianella pedunculata (Royle ex D. Don) Harry Smith.

Comastoma pedunculatum là một loài thực vật có hoa trong họ Long đởm. Loài này được (Royle ex G.Don) Holub mô tả khoa học đầu tiên năm 1968.

长梗喉毛花（学名：Comastoma pedunculatum）为龙胆科喉毛花属下的一个种。