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圆穗蓼Polygonum macrophyllum

时间:2013-10-30 14:15来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ):圆穗蓼 学名( Scientific Name ): Polygonum macrophyllum D. Don 英文名( English Common Name ): 别名( Chinese Common Name ): 异名( Synonym ): Bistorta sphaerostachya (Meisn.) Greene Bistorta macrophyllum
中文名(Chinese Name):圆穗蓼
学名(Scientific Name):Polygonum macrophyllum D. Don
英文名(English Common Name):
别名(Chinese Common Name):
异名(Synonym):Bistorta sphaerostachya (Meisn.) Greene  Bistorta macrophyllum (D. Don) Sajdak.  Bistorta yunnanensis H. Gross  Polygonum macrophyllum f. tomentosum Kitam.  Polygonum sphaerostachyum Meissn.
科属(Family & Genus):蓼科(Polygonaceae)蓼属
形态特征(Description):多年生草本。根状茎粗壮,弯曲,直径1-2厘米。茎直立,高8-30厘米,不分枝,2-3条自根状茎发出。基生叶长圆形或披针形,长3-11厘米,宽1-3厘米,顶端急尖,基部近心形,,上面绿色,下面灰绿色,有时疏生柔毛,边缘叶脉增厚,外卷;叶柄长3-8厘米;茎生叶较小狭披针形或线形,叶柄短或近无柄;托叶鞘筒状,膜质,下部绿色,上部褐色,顶端偏斜,开裂,无缘毛。总状花序呈短穗状,顶生,长1.5-2.5厘米,直径1-1.5厘米;苞片膜质,卵形,顶端渐尖,长3-4毫米,每苞内具2-3花;花梗细弱,比苞片长;花被5深裂,淡红色或白色,花被片椭圆形,长2.5-3毫米;雄蕊8, 比花被长,花药黑紫色;花柱3, 基部合生,柱头头状。瘦果卵形,具3棱,长2.5-3毫米,黄褐色,有光泽,包于宿存花被内。花期7-8月,果期9-10月。
分布(Distribution):产陕西、甘肃、青海、湖北、四川、云南、贵州和西藏,生海拔2300-5000米山坡草地、高山草甸。印度、尼泊尔、不丹也有。
用途(Use):
引自中国植物志英文版:FOC Vol. 5 Page 297     
Polygonum macrophyllum D. Don, Prodr. Fl. Nepal. 70. 1825.
圆穗拳参 yuan sui quan shen| Polygonaceae  | Polygonum
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.
Grassy slopes, alpine meadows; 2000-5000 m. Gansu, Guizhou, ?Henan, Hubei, ?Qinghai, Shaanxi, Sichuan, Xizang, Yunnan [Bhutan, N India, Nepal, Sikkim].
 


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