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银灰旋花Convolvulus ammannii

时间:2013-09-05 10:45来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ):银灰旋花 学名( Scientific Name ): Convolvulus ammannii Desr. 英文名( English Common Name ): 别名( Chinese Common Name ): 亚氏旋花 异名( Synonym ): 科属( Family Genus ): 旋花科(Convolvulaceae)旋花
中文名(Chinese Name):银灰旋花
学名(Scientific Name):Convolvulus ammannii Desr.
英文名(English Common Name):
别名(Chinese Common Name):亚氏旋花
异名(Synonym):
科属(Family & Genus):旋花科(Convolvulaceae)旋花属
形态特征(Description):多年生草本,根状茎短,木质化,茎少数或多数,高2-10(-15)厘米,平卧或上升,枝和叶密被贴生稀半贴生银灰色绢毛。叶互生,线形或狭披针形,长1-2厘米,宽(0.5-)1-4(5)毫米,先端锐尖,基部狭,无柄。花单生枝端,具细花梗,长0.5-7厘米;萼片5,长(3-5-)4-7毫米,外萼片长圆形或长圆状椭圆形,近锐尖或稍渐尖,内萼片较宽,椭圆形,渐尖,密被贴生银色毛;花冠小,漏斗状,长(8)-9-15毫米,淡玫瑰色或白色带紫色条纹,有毛,5浅裂;雄蕊5,较花冠短一半,基部稍扩大;雌蕊无毛,较雄蕊稍长,子房2室,每室2胚珠;花柱2裂,柱头2,线形。蒴果球形,2裂,长约4-5毫米。种子2-3枚,卵圆形,光滑,具喙,淡褐红色。
分布(Distribution):产东北、河北、河南、西北及西藏等地,生于旱山坡草地或路旁。朝鲜、蒙古及俄罗斯也有。
用途(Use):
引自中国植物志英文版FOC Vol. 16 Page 290
Convolvulus ammannii Desrousseaux in Lamarck, Encycl. 3: 549. 1789.
银灰旋花 yin hui xuan hua| Convolvulaceae  | Convolvulus
Herbs perennial, with a short woody rootstock. Stems few to several, prostrate or ascending, 2-10(-15) cm; branches ± densely silvery sericeous. Leaves sessile, linear or linear-oblanceolate, 1-2 cm X 1-4 mm, ± densely silvery sericeous, base attenuate, apex acute. Pedicel 0.5-7 cm. Flowers solitary, subterminal. Sepals slightly unequal, 3.5-7 mm, ± sericeous abaxially; outer 2 oblong or oblong-elliptic, apex acute or acuminate; inner ones wider, elliptic, apex acuminate. Corolla pale rose or whitish with pink-purple lines, funnelform, 0.8-1.5 cm; limb shallowly 5-lobed, midpetaline bands pubescent. Stamens included, unequal; filaments glabrous. Disc ringlike. Ovary ovoid, pilose apically. Stigmas linear. Capsule ovoid-ellipsoid, 6-8 mm, apiculate, apiculum pilose. Seeds 2 or 3, reddish, ovoid, smooth, beaked. Fl. Jun-Aug, fr. Jul-Aug.
Loess soils, ravines, clay banks, on dry grassy slopes, roadsides; 1200-3400 m. Gansu, Hebei, Heilongjiang, Henan, Jilin, Liaoning, Nei Mongol, Ningxia, Qinghai, Shaanxi, Shanxi, W Sichuan, Xinjiang, E Xizang [Kazakhstan, Korea, ?Kyrgyzstan, Mongolia, Russia].



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