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干净杜鹃Rhododendron detersile

时间:2013-09-09 11:39来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ):干净杜鹃 学名( Scientific Name ): Rhododendron detersile Franch. 英文名( English Common Name ): 别名( Chinese Common Name ): 异名( Synonym ): 科属( Family Genus ): 杜鹃花科(Ericaceae)杜鹃属 形态特
中文名(Chinese Name):干净杜鹃
学名(Scientific Name):Rhododendron detersile Franch.
英文名(English Common Name):
别名(Chinese Common Name):
异名(Synonym):
科属(Family & Genus):杜鹃花科(Ericaceae)杜鹃属
形态特征(Description):常绿小灌木,高0.4-1米;幼枝密被红棕色绒毛,直径5-6毫米;老枝暗灰色,无毛,芽鳞宿存。叶厚革质,常3-6枚集生于小枝顶端,叶片长圆形至倒披针形,长3-6厘米,宽1-2厘米,先端钝圆,具短小尖头,基部近截形或微心形,边缘反卷,上面深绿色,略具光泽,初被腺毛,后变无毛,中脉凹入,多少呈泡状粗皱纹,侧脉约12对,下面密被一层绵毛状毛被,由红棕色的分枝毛组成,成叶多脱落;叶柄短,长3-4毫米,密被红棕色绒毛。顶生密集的伞形花序,有花4-8朵,总轴极短;花梗长1-1.5厘米,密被红棕色柔毛和腺毛;花萼膜质,5深裂,裂片卵状披针形,长4-5毫米,顶端急尖,外面密被柔毛和短柄腺体,边缘具腺头睫毛;花冠钟形,长2.5-3厘米,粉红色,内面向上具深红色斑点,基部被短柔毛,裂片5,近圆形,长0.8-1厘米,宽1.2-1.5厘米,顶端微缺;雄蕊10,不等长,长1.3-2厘米,花丝向下扁平,基部密被白色短柔毛,花药椭圆形,淡黄褐色,长2毫米;子房圆锥形,长5毫米,密被红棕色长柔毛,混生短柄腺体,花柱长约2厘米,基部具短柄腺体,柱头盘状。蒴果圆柱形,长1.2厘米,直径5毫米,被残存的柔毛和腺毛。花期5-6月,果期8-10月。
分布(Distribution):产陕西太白山、四川东北部。生于海拔2 500-2 900米的山坡林中。
用途(Use):
引自中国植物志英文版FOC Vol. 14 Page 385
Rhododendron detersile Franchet, J. Bot. (Morot). 12: 260. 1898.
干净杜鹃 gan jing du juan  | Apiaceae  | Rhododendron
Small shrubs, 0.4–1 m tall; young shoots densely rufous-tomentose; bud scales persistent. Petiole short, 3–4 mm, densely rufous-tomentose; leaf blade thickly leathery, oblong to oblanceolate, 3–6 × 1–2 cm; base broadly cuneate; margin revolute; apex blunt, rounded, mucronate; abaxial surface indumentum 1-layered, red-brown woolly, detersile when mature, hairs branched; adaxial surface appearing bullate, deep green, slightly shiny, glabrous; midrib, lateral and net veins impressed adaxially. Inflorescence compact, umbellate, 4–8-flowered; rachis very short. Pedicel 1–1.5 cm, densely red-brown glandular-hairy and pubescent; calyx membranous, lobes 5, 4–5 mm, ovate-lanceolate, acute, hairy and shortly glandular-hairy outside, margin ciliate-glandular; corolla campanulate, pink, with crimson spots on upper lobes inside, 2.5–3 cm, lobes 5, pubescent at base; stamens 10, unequal, filaments pubescent at base; ovary conical, ca. 5 mm, densely red-brown villous and glandular-hairy; style ca. 2 cm, shortly glandular-hairy at base; stigma discoid. Capsule cylindric, ca. 12 × 5 mm, villous, and with vestiges of glandular hairs. Fl. May–Jun, fr. Aug–Oct.
Forests, mountain slopes; 2500–2900 m. SW Shaanxi (Taibai Shan), NE Sichuan.








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