滇南杜鹃Rhododendron hancockii

中文名(Chinese Name):滇南杜鹃
学名(Scientific Name):Rhododendron hancockii Hemsl.
英文名(English Common Name):
别名(Chinese Common Name):蒙自杜鹃
异名(Synonym):
科属(Family & Genus):杜鹃花科(Ericaceae)杜鹃属
形态特征(Description):常绿灌木或乔木,高1-4米,稀8-13米;小枝粗壮,灰褐色,无毛。叶革质,集生枝顶,倒卵形或长圆状倒披针形,长8-13厘米,宽2.5-5厘米,先端短渐尖,向基部渐狭,边缘微反卷,有时具不明显的刚毛状小睫毛,上面干后深绿色,下面淡灰褐色,中脉和侧脉在上面明显凹陷,下面凸出,侧脉未达叶缘连结,两面无毛;叶柄长6-8毫米,无毛。花芽长卵圆形,两端渐尖,鳞片干膜质至革质,卵形至阔倒卵形或长圆状披针形,边缘及内面被白色短柔毛。花单生枝顶叶腋;花梗长1.7厘米,被淡黄褐色短柔毛,后近于无毛;花萼裂片形状多变,裂片三角形、三角状卵形或线状披针形,长达9毫米,外面基部被短柔毛;花冠白色,阔漏斗形,长4.5-6厘米,直径约8厘米,5深裂,裂片阔倒卵形或卵状椭圆形,无毛或上部边缘内面被微柔毛,基部具淡黄色斑点,花冠管圆筒状,长1.5厘米;雄蕊10,不等长,比花冠短,花丝扁平,中部以下被柔毛;子房长圆柱形,长6毫米,密被淡黄褐色短柔毛,花柱稍比雄蕊长,长5.3厘米,无毛,柱头盘状,微5裂,深褐色。蒴果圆柱状,长3-5.5厘米,直径6.5毫米,具纵肋,先端变细呈喙状,被短柔毛。花期4-6月,果期7-12月,稀翌年2月。
分布(Distribution):产云南、广西。常生于海拔1100-2000米左右的山坡灌丛或杂木林内。
用途(Use):
引自中国植物志英文版FOC Vol. 14 Page 429      
Rhododendron hancockii Hemsley, Bull. Misc. Inform. Kew. 1895: 107. 1895.
滇南杜鹃 dian nan du juan | Apiaceae  | Rhododendron
Shrubs or trees, 2–7(–13) m tall; branchlets stout, gray-brown, glabrous. Petiole 6–8 mm, glabrous or glandular-setose; leaf blade obovate or oblong-oblanceolate, 7–13 × 1.5–5 cm, tapering toward the base; margin slightly revolute; sometimes obscurely setose-ciliate; apex shortly acuminate; both surfaces glabrous; lateral veins obsolete abaxially, conspicuously impressed adaxially. Inflorescence subapical, 1(or 2)-flowered. Pedicel ca. 1.5 cm, glabrous or yellowish brown pubescent; calyx lobes polymorphic, lobes triangular or triangular-ovate to linear-lanceolate, or linear, 5–13 mm, pubescent at base on outer surface; corolla broadly funnelform, white, with yellowish flecks, 4.5–6 × ca. 8 cm; tube cylindric, ca. 15 mm, lobes broadly obovate or ovate-elliptic, glabrous or puberulent on upper part near margin within; stamens 10, unequal, shorter than corolla, filaments flat, pubescent below middle; ovary narrowly cylindric, ca. 6 mm, densely yellowish brown pubescent; style 4.5–5 cm, slightly longer than stamens, glabrous. Capsule cylindric, ribbed, apex slightly beaked and pubescent, 30–55 × ca. 7 mm. Fl. Apr–May, fr. Aug–Dec.
Mixed forests, thickets on mountain slopes; 1100–2000 m. C, N, and W Guangxi, C and SE Yunnan.
滇南杜鹃Rhododendron hancockii

滇南杜鹃Rhododendron hancockii

滇南杜鹃Rhododendron hancockii(责任编辑:徐晔春)

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