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灰背杜鹃Rhododendron hippophaeoides

时间:2013-09-09 11:41来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ): 灰背杜鹃 学名( Scientific Name ): Rhododendron hippophaeoides Balf. f. et W. W. Smith 英文名( English Common Name ): 别名( Chinese Common Name ): 异名( Synonym ): Rhododendron fimbriatum Hutch 科属(
中文名(Chinese Name):灰背杜鹃
学名(Scientific Name): Rhododendron hippophaeoides Balf. f. et W. W. Smith
英文名(English Common Name):
别名(Chinese Common Name):
异名(Synonym):Rhododendron fimbriatum Hutch
科属(Family & Genus):杜鹃花科(Ericaceae)杜鹃属
形态特征(Description):常绿小灌木,高0.25-1(-1.5)米。茎直立,幼枝细长,呈扫帚状,黄棕色,密被棕黄褐色鳞片。叶芽鳞脱落。叶散生于幼枝,叶片近革质,长圆形、椭圆形、长圆状披针形至长圆状卵形,长(8-)12-25(-40)毫米,宽(4-)5-10(-17)毫米,顶端钝或圆,罕急尖或具小突尖头,基部宽楔形至圆形,上面灰绿色,无光泽,密被淡黄色、邻接的鳞片,下面淡黄灰色,鳞片相同,透明的金黄色至麦秆色,相互重叠,罕邻接;叶柄长2-5毫米,被淡色鳞片。花序顶生,伞形总状,有花4-7(8)朵;花梗长2.5-7毫米,花芽鳞脱落或罕宿存;花萼小,长1-2毫米,常带红色,5裂片不等大,圆形至宽三角形,被淡色鳞片,顶端边缘有流苏状疏长毛;花冠宽漏斗状,长1-1.3(-1.5)厘米,鲜玫瑰色、淡紫色至蓝紫色,少有白色,花管长约4毫米,稍短于花冠裂片,外面无鳞片,内面喉内密被短柔毛,花冠裂片5,圆形;雄蕊10,罕为8,不等长,短于花冠,花丝近基部有毛;子房长1-2.5毫米,密被淡色鳞片,花柱短,长4-10毫米,与雄蕊等长或稍短,无鳞片或罕在基部被疏毛。蒴果狭卵形,长5-6毫米,密被鳞片。花期5-6月,果期10月。
分布(Distribution):产四川、云南。生于海拔2400-4800米松林、云杉林下、林内湿草地及高山杜鹃灌丛、灌丛草甸。
用途(Use):
引自中国植物志英文版FOC Vol. 14 Page 287
Rhododendron hippophaeoides I. B. Balfour & W. W. Smith, Notes Roy. Bot. Gard. Edinburgh. 9: 236. 1916.
灰背杜鹃 hui bei du juan | Apiaceae  | Rhododendron
Erect shrubs, 0.25–1(–1.5) m tall; branchlets virgate; bud scales deciduous. Petiole 2–5 mm, scaly; leaf blade oblong, elliptic, oblong-lanceolate to oblong-ovate, (0.8–)1.2–2.5(–4) × (0.4–)0.5–1(–1.7) cm; base broadly cuneate; apex rounded or obtuse; abaxial surface yellowish buff, scales overlapping, uniformly creamy yellow; adaxial surface pale green, scaly. Inflorescence 4–7(–8)-flowered. Pedicel 2.5–7 cm; calyx reddish, lobes 1–2 mm, rounded, unequal, persistent in fruit, scaly, margin ciliate; corolla broadly funnelform, bright rose or lavender-blue to bluish purple, rarely white, 1–1.3(–1.5) cm, tube ca. 4 mm, outer surface not scaly; inner surface pubescent; stamens (8–)10, shorter than corolla, filaments pubescent towards base; ovary 1–2.5 mm, scaly; style 0.4–1.6 cm, usually as long as stamens, glabrous or occasionally pubescent at base. Capsule narrowly ovoid, 5–6 mm, densely scaly. Fl. May–Jun, fr. Oct.
Picea and Pinus forests, Rhododendron thickets, moist stony pastures, open grassy marshes, open stony slopes; 2400–4800 m. SW Sichuan, C, N, and W Yunnan.




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