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亮叶杜鹃Rhododendron vernicosum

时间:2013-09-09 11:49来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ): 亮叶杜鹃 学名( Scientific Name ): Rhododendron vernicosum Franch. 英文名( English Common Name ): 别名( Chinese Common Name ): 异名( Synonym ): Rhododendron euanthum I. B. Balfour et W. W. Sm. Rhododen
中文名(Chinese Name):亮叶杜鹃
学名(Scientific Name):Rhododendron vernicosum Franch.
英文名(English Common Name):
别名(Chinese Common Name):
异名(Synonym):Rhododendron euanthum I. B. Balfour et W. W. Sm.  Rhododendron lucidum Franch.  Rhododendron araliiforme Balf. et Forrest  Rhododendron rhantum I. B. Balfour et W. W. Sm.  Rhododendron adoxum Balf. f. et Forrest  Rhododendron hexamerum Hand.-Mazz.  Rhododendron sheltonii Hemsl. et E. H. Wilson  Rhododendron sheltoniae Hemsl. & E.H. Wilson
科属(Family & Genus):杜鹃花科(Ericaceae)杜鹃属
形态特征(Description):常绿灌木或小乔木,高1-5米,稀达8米;树皮灰色至灰褐色;幼枝淡绿色,有时有少数腺体,后即秃净,老枝灰褐色。冬芽顶生,卵圆形,长约1厘米,芽鳞边缘具白色短柔毛。叶革质,长圆状卵形至长圆状椭圆形,长5-12.5厘米,宽2.3-4.8厘米,先端钝至宽圆形,基部宽或近圆形,上面深绿色,微被蜡质,无毛,下面灰绿色,在放大镜下可见有许多点状小毛,中脉在上面稍凹下,下面凸起,侧脉14-16对;叶柄圆柱形,淡黄绿色,长1.5-3.5厘米,无毛。顶生总状伞形花序,有花6-10朵;总轴长约1厘米,疏被腺体及白色小柔毛;花梗紫红色,长2-3厘米,被红色短柄腺体;花萼小,长1.6毫米,淡绿或紫红色,肉质,裂片7(-8),圆形至三角形,外面密被腺体,边缘腺体呈流苏状;花冠宽漏斗状钟形,有闷人气味,长4-4.2厘米,直径5.2-6.4厘米,淡红色至白色,无毛,内面有或无深红色小斑点,裂片7(-5-6),近于圆形,长1.8厘米,宽约2厘米,顶端有缺刻;雄蕊(11-13)-14,不等长,长2-3厘米,花丝白色,无毛,花药长椭圆形,长3毫米,黄色至白色;子房圆锥形,6-7室,绿色,长5毫米,密被红色腺体,花柱淡白色,长2.6厘米,密被紫红色短柄腺体,柱头小,宽约2.5毫米,裂片状,绿色。蒴果长圆柱形,斜生果梗上,微弯曲,长3-3.8厘米,绿色至 浅褐色,肋纹明显,有残存的腺体痕迹。花期4-6月,果期8-10月。
分布(Distribution):产四川、云南和西藏。生于海拔2650-4300米的森林中。
用途(Use):
引自中国植物志英文版FOC Vol. 14 Page 335
Rhododendron vernicosum Franchet, J. Bot. (Morot). 12: 258. 1898.
亮叶杜鹃 liang ye du juan  | Apiaceae  | Rhododendron
Rhododendron lucidum Franchet, J. Bot. (Morot) 9: 390. 1895, not Nuttall (1853); R. adoxum I. B. Balfour & Forrest; R. araliiforme I. B. Balfour & Forrest; R. euanthum I. B. Balfour & W. W. Smith; R. hexamerum Handel-Mazzetti; R. rhantum I. B. Balfour & W. W. Smith; R. sheltoniae Hemsley & E. H. Wilson.
Shrubs or small trees, 1–5(–8) m tall; young shoots sparsely glandular, glabrescent. Petiole cylindric, 15–35 mm, glabrous; leaf blade leathery, oblong-ovate to oblong-elliptic, 5–12.5 × 2.3–4.8 cm; base rounded; apex obtuse or rounded; abaxial surface pale gray-green, with minute punctulate hairs; adaxial surface dark green, slightly wax-covered, glabrous; midrib prominent abaxially, grooved adaxially; lateral veins 14–16-paired. Inflorescence 6–10-flowered; rachis ca. 10 mm, sparsely glandular and puberulent. Pedicel 2–3 cm, glandular-hairy; calyx fleshy; lobes 7 or 8, ca. 1.6 mm, densely glandular-hairy, margin gland-fringed; corolla widely funnel-campanulate, somewhat fragrant, pale pink to white, 3.5–5 cm, glabrous; lobes (5–)7, suborbicular, ca. 1.8 × 2 cm; apex emarginate; stamens (11–)14, unequal, 2–3 cm, filaments glabrous; ovary conoid, ca. 5 mm, densely red-glandular; style ca. 2.6 cm, red glandular-hairy to tip. Capsule cylindric, oblique, slightly curved, 30–40 mm Fl. Apr–Jun, fr. Aug–Oct.
Forests; 2600–4300 m. W Sichuan, SE Xizang, W Yunnan.







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