Comments
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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.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Description
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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.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Distribution
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E. Himalaya (Nepal to Bhutan), Assam, Tibet.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Distribution
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Sichuan, Xizang, Yunnan [Bhutan, India, Nepal, Sikkim].
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Habitat
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Valley forests, slopes, bare soil or earthy banks near rivers; 2500--4000 m.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Synonym
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Juncus tratangensis Satake.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA