Description
provided by eFloras
Herbs perennial. Rhizomes curved, large, 1-2 cm in diam. Stems 2 or 3 from rhizome, erect, 8-30 cm tall, simple. Basal leaves petiolate; petiole 3-8 cm; leaf blade gray-green abaxially, green adaxially, oblong, lanceolate, or linear-lanceolate 3-11 × 0.2-3 cm, abaxially sometimes sparsely pubescent, adaxially glabrous, base subcordate or cuneate, margin with thickened vein tips, revolute, apex acute. Cauline leaves shortly petiolate or subsessile; leaf blade narrowly lanceolate or linear; ocrea: lower part green, upper part brown, tubular, membranous, apex oblique, dehiscent, not ciliate. Inflorescence terminal, shortly spicate, 1.5-2.5 cm, 1-1.5 cm in diam.; bracts ovate, 3-4 mm, membranous, apex acuminate, each 2- or 3-flowered. Pedicel 4-5 mm, slender. Perianth pinkish or white, 5-parted; tepals elliptic, 2.5-3 mm. Stamens 8, exserted; anthers black-purple. Styles 3, connate at base; stigmas capitate. Achenes included in persistent perianth, yellow-brown, shiny, ovoid, trigonous, 2.5-3 mm.
- license
- cc-by-nc-sa-3.0
- copyright
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Distribution
provided by eFloras
Gansu, Guizhou, ?Henan, Hubei, ?Qinghai, Shaanxi, Sichuan, Xizang, Yunnan [Bhutan, N India, Nepal, Sikkim].
- license
- cc-by-nc-sa-3.0
- copyright
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Habitat
provided by eFloras
Grassy slopes, alpine meadows; 2000-5000 m.
- license
- cc-by-nc-sa-3.0
- copyright
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Cyclicity
provided by Plants of Tibet
Flowering from July to August; fruiting from August to September.
Diagnostic Description
provided by Plants of Tibet
Polygonum macrophyllum var. macrophyllum is close relative of Polygonum macrophyllum var. stenophyllum, but differs from the latter in its basal leaves oblong or lanceolate, 10-30 mm wide (vs. linear-lanceolate, 2-5 mm wide).
Distribution
provided by Plants of Tibet
Polygonum macrophyllum is occurring in Guizhou, Hubei, Shaanxi, Sichuan, Xizang, Yunnan of China, Bhutan, N India, Nepal, Sikkim.
General Description
provided by Plants of Tibet
Herbs perennial. Rhizomes curved, large, 1-2 cm in diameter. Stems 2 or 3 from rhizome, erect, 8-30 cm tall, simple. Basal leaves petiolate; petiole 3-8 cm; leaf blade gray-green abaxially, green adaxially, oblong or lanceolate, 3-11 cm long, 1-3 cm wide, abaxially sometimes sparsely pubescent, adaxially glabrous, base subcordate or cuneate, margin with thickened vein tips, revolute, apex acute. Cauline leaves shortly petiolate or subsessile; leaf blade narrowly lanceolate or linear; ocrea: lower part green, upper part brown, tubular, membranous, apex oblique, dehiscent, not ciliate. Inflorescence terminal, shortly spicate, 1.5-2.5 cm, 1-1.5 cm in diameter; bracts ovate, 3-4 mm, membranous, apex acuminate, each 2-3-flowered. Pedicel 4-5 mm, slender. Perianth pinkish or white, 5-parted; tepals elliptic, 2.5-3 mm. Stamens 8, exserted; anthers black-purple. Styles 3, connate at base; stigmas capitate. Achenes included in persistent perianth, yellow-brown, shiny, ovoid, trigonous, 2.5-3 mm.
Habitat
provided by Plants of Tibet
Growing in grassy slopes, alpine meadows; 2300-5000 m.