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大白杜鹃 dabaidujuan(大白花杜鹃
Synonyms:
Rhododendron spooneri Hemsl. et E. H. Wilson
Rhododendron franchetianum H. Lév.
Rhododendron giraudiasii H. Lév. more...

被子植物门 Angiospermae
双子叶植物纲 Dicotyledoneae
合瓣花亚纲 Sympetalae
杜鹃花目 Ericales
杜鹃花科 Ericaceae
杜鹃属 Rhododendron
相关名称 Common Names
拉丁名
Rhododendron decorum Franch.
中文名
大白杜鹃
拼音
dabaidujuan
别名
大白花杜鹃
异名
Rhododendron spooneri Hemsl. et E. H. Wilson
Rhododendron franchetianum H. Lév.
Rhododendron giraudiasii H. Lév.
Rhododendron albicaule H. Lév.
文献 Literature
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描述 Description
常绿灌木,高达5米;小枝粗壮,无毛,幼枝绿色,初被白粉。叶簇生枝顶,厚革质,矩圆形或矩圆状椭圆形,长7-12厘米或更大,宽3-5厘米,两端钝圆,顶端圆,有短凸尖,无毛,上面有密网纹,侧脉纤细,两面微隆起;叶柄长1-1.5厘米,粗,上面近平坦。顶生总状伞形花序大,直径约20 FT米,有花约10朵,总抽长约3厘米,有腺体;花梗长3-3.5厘米,疏生腺体;花萼较发达,杯状,外面和波状边缘疏生腺体;花冠白色或带蔷薇色,有时有淡绿或粉红色点,花冠筒长3-5厘米,里面基部有毛,裂片6-8,近圆形,有微缺;雄蕊12-16;子房10室,密生腺体,花柱绿色,全部有白色或淡黄腺体。蒴果矩圆形,长4厘米。 分布于云南、四川。生灌丛中。花充蔬菜吃。
中国高等植物图鉴

10. 大白杜鹃(中国高等植物图鉴)大白花杜鹃(云南植物志)

Rhododendron decorum Franch. in Bull. Soc. Bot. France 33:230. 1886 et Pl. Davidian. 2: 83. 1888; Hemsl. in Journ. Linn. Soc. Bot. 26: 22. 1889; Diels in Engler's Bot. Jahrb. 29: 511. 1900; Rehd. et Wils. in Sargent, Pl. Wils. 1: 541. 1913; Hutch. in Curtis's Bot. Mag. 142: t. 8659. 1916; Tagg in Stevenson, Spec. Rhodod. 269. 1930; Rehd. in Journ. Arn. Arb. 15: 270. 1934; Hand.- Mazz. Symb. Sin. 7: 1936;中国高等植物图鉴3: 101. 图4155. 1974; Chamb. in Not. Bot. Gard. Edinb. 35: 259. 1977 et in ibid. 39: 230. 1982; Cullen et Chamb. in Not. Bot. Gard. Edinb. 37:330. 1979; 云南植物志4: 364. 1986; 峨眉山杜鹃花42. 图13. 1986; 中国四川植物花24-25. 1986.——R. franchetianum Levl. in Bull. Soc. Agric. Sarthe 39: 45. 1903. et Cat. Pl. Yunn. 91. 1916.——R. spooneri Hemsl. et Wils. in Kew Bull. Misc. Inform. 1910: 110. 1910.——R. albicaule Levl. in Fedde, Repert. Sp. Nov. 13: 148. 1914.——R. giraudiasii Levl. in ibid. 13:340.1914 et Cat. Yunn.91.1916.

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Shrubs or small trees, 1–6 m tall; young shoots greenish, glabrous. Petiole 12–40 mm, glabrous; leaf blade thickly leathery, oblong, oblong-ovate or oblong-elliptic, 5–19(–30) × 3–11 cm; base cordate or cuneate to nearly rounded; apex obtuse, rounded, apiculate; both surfaces glabrous when mature; abaxial surface pale green; adaxial surface deep green, midrib prominent abaxially, grooved adaxially; lateral veins 18-paired. Inflorescence 8–10-flowered; rachis 20–25 mm, sparsely glandular. Pedicel stout, 2.5–4 cm, glandular-hairy; calyx lobes 5, 1.5–2.5 mm, glandular-hairy; corolla funnel-campanulate, fragrant, white to pale pink, 3–10 × 5–9 cm, outer surface sparsely glandular, inner surface puberulent at base; lobes 6–8, suborbicular, ca. 2 × 2.4 cm, emarginate or entire; stamens 13–16, unequal, 2–3 cm, filaments pubescent at base; ovary cylindric, ca. 6 mm, densely glandular-hairy; style 3.4–4 cm, with similar glands to tip; stigma 2–5(–6.5) mm in diam. Capsule oblong, usually slightly curved, 25–40 × 10–15 mm. Fl. Apr–Jun, fr. Sep–Oct.

Forests, thickets; 1000–3300 m. W Guizhou, SW Sichuan, SE Xizang, Yunnan [Myanmar].

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