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桃叶杜鹃Rhododendron annae

时间:2013-09-09 12:10来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ):桃叶杜鹃 学名( Scientific Name ): Rhododendron annae 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
中文名(Chinese Name):桃叶杜鹃
学名(Scientific Name): Rhododendron annae 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):常绿灌木,高约1.5-2米;幼枝粗壮,微被柔毛或无毛,有稀疏腺体;老枝灰白色,常有层状剥落。叶革质,披针形或椭圆状披针形,长7-10厘米,宽2-3厘米,先端渐尖,基部楔形,两面无毛,中脉在上面下凹成沟纹,在下面显著隆起,侧脉12-16对,在上面微下陷,在下面微隆起;叶柄长约1厘米,在上面平坦,中央有浅沟,下面圆柱状,无毛。总状伞形花序,有花6-10朵,总轴长1.5-2厘米,常光滑无毛;花梗长1-2厘米,被有柄腺体;花萼小,长仅1-2毫米,波状5裂,裂片外面及边缘具有柄腺体;花冠宽钟状或杯状,宽阔,长2-3厘米,白色或淡紫红色,筒部有紫红色斑点,5深裂(深至花冠的中部以下),裂片圆形,长约1.5厘米,宽1.7厘米,顶端微凹缺;雄蕊10,长1.5-2厘米,不等长,花丝细瘦,无毛,花药卵圆形,长约2毫米;雌蕊与花冠近等长;子房圆柱状锥形,长约4毫米,密被腺体,花柱长约2厘米,通体有腺体,柱头微膨大。蒴果圆柱状,长1.5-2.5厘米,直径8-12毫米,有腺体。花期6-7月,果期8-10月。
分布(Distribution):产贵州西部、云南东北部。生于海拔1 250-1 710米的常绿阔叶林或灌木丛中。
用途(Use):
引自中国植物志英文版FOC Vol. 14 Page 365
Rhododendron annae Franchet, J. Bot. (Morot). 12: 258. 1898.
桃叶杜鹃 tao ye du juan | Apiaceae  | Rhododendron
Shrubs, evergreen, 1.5–2 m tall; older branches glabrous; young shoots stout, puberulent, sparsely glandular. Petiole cylindric, 10–20 mm, glabrous; leaf blade leathery, lanceolate or elliptic-lanceolate, 7–10 × 2–3.7 cm; base cuneate; margin slightly undulate; apex acuminate or obtuse; both surfaces glabrous; midrib slightly raised abaxially, deeply grooved adaxialy; lateral veins 12–16-paired, obscure. Inflorescence raceose-umbellate, 6–12-flowered, rachis usually glabrous. Pedicel 1–3 cm, densely stipitate; calyx lobes 5, 1–2 mm, suborbicular, gland-fringed; corolla open-campanulate or cup-shaped, creamy-white or pale rose, pure white or pink, with or without purple flecks, 2–3 cm, lacking nectar pouches; lobes 5, orbicular, 1.5–1.7 cm, emarginate; stamens 10, unequal, 1–2 cm, filaments glabrous; ovary conoid, 4–5 mm, densely glandular; style ca. 2 cm, glandular-hairy to tip. Capsule cylindric, 15–25 × 8–12 mm, glandular. Fl. Jun–Jul, fr. Aug–Oct.
Evergreen broad-leaved forests, forest margins, thickets; 1200–3000 m. C and W Guizhou, W Yunnan.






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