Juncus minimus Buch.

Plants perennial, tufted, 3--7 cm tall. Rhizome short. Stems terete, striate. Cataphylls 1 or 2, pale brown. Leaves basal, occasionally 1 cauline; leaf sheath open or sometimes closed, auricles absent; leaf blade broadly linear to narrowly lanceolate, flat, 1.5--6 cm × 1--3 mm, apex obtuse. Inflorescences terminal; head solitary, 0.7--1.4 cm in diam., (2 or)3--6-flowered; basal bract leaflike, 0.5--2 cm, often longer than head. Perianth segments brownish yellow to chestnut yellow, chestnut in fruit, lanceolate, 4--4.5 × 1.1--1.6 mm, equal or inner ones slightly longer than outer, apex acute. Stamens 6; filaments 2.5--3.5 mm; anthers 0.5--0.7 mm. Style 0.5--1.5 mm; stigmas 1.5--2 mm. Capsule chestnut brown, trigonous oblong to ellipsoid, 5--6 mm, imperfectly 3-septate, apex mucronate. Seeds oblong, 0.5 mm; appendages white, 1.1--1.5 mm including tails. Fl. Jun--Jul, fr. Jul--Aug.

E. Himalaya (Nepal to Bhutan), W. China.

Sichuan, Xizang, Yunnan [Bhutan, Nepal, Sikkim].

4100 m

Moist sand on river banks, wet gravel; 4000--4700 m.

Juncus minimus là một loài thực vật có hoa trong họ Juncaceae. Loài này được Buchenau mô tả khoa học đầu tiên năm 1867.

矮灯心草（学名：Juncus minimus）屬於低矮草本，高3-5釐米，是灯心草科灯心草属的植物。分布于不丹、锡金、尼泊尔以及中国大陆的四川、西藏等地，生长于海拔4,360米的地区，常生长在河岸沙地边，目前尚未由人工引种栽培。