Juncus ochraceus Buch.

This species is readily distinguished from others by its plumelike, vegetatively reproductive partial inflorescences and by the long style and stigmas of the fertile flowers. Juncus tratangensis was described for the fertile form that grows intermingled with the sterile form. Juncus fimbristyloides Noltie (Edinburgh J. Bot. 55: 39. 1998), recently described from Yunnan, resembles J. ochraceus in its plumelike partial inflorescences but differs in having a single stem leaf and smaller sterile partial inflorescences, with fewer, smaller, acute bracts.

Plants perennial, tufted, 15--33 cm tall. Rhizome short. Stems terete, ca. 1 mm in diam., striate. Basal leaves few, cauline leaves 2 or 3; leaf sheath auricles obtuse, membranous, free part ca. 0.3 mm; leaf blade linear (4--)7--17 cm, apex acute. Inflorescences cymose, much branched, plumelike, to 12 cm; involucral bract leaflike, 2.7--3.5 cm. Perianth segments lanceolate, center greenish, margin hyaline, apex acute or acuminate; outer segments 3--3.5 × ca. 1.2 mm; inner segments 3--3.2 × ca. 1.2 mm. Stamens 6; filaments 1--1.5 mm; anthers 1.3--2.2 mm. Style 1.7--2.6 mm; stigmas 1.7--3.2 mm. Capsule trigonous oblong, ca. 2.4 mm; beak ca. 1.8 mm. Seeds (immature) apparently not appendaged at both ends. Fl. Sep--Oct, fr. Oct--Nov.

E. Himalaya (Nepal to Bhutan), Assam, Tibet.

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

2400-3500 m

Valley forests, slopes, bare soil or earthy banks near rivers; 2500--4000 m.

Juncus tratangensis Satake.

Juncus ochraceus là một loài thực vật có hoa trong họ Juncaceae. Loài này được Buchenau mô tả khoa học đầu tiên năm 1873.

羽序灯心草（学名：Juncus ochraceus）为灯心草科灯心草属的植物。分布在尼泊尔、锡金以及中国大陆的四川、云南等地，生长于海拔2,500米至4,000米的地区，多生在山坡或沟边杂木林中，目前尚未由人工引种栽培。