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瘤枝杜鹃 liuzhidujuan

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 asperulum Hutch. et K. Ward
中文名
瘤枝杜鹃
拼音
liuzhidujuan
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描述 Description

170.瘤枝杜鹃(西藏植物志)

Rhododendron asperulum Hutch. et K. Ward in Stevenson, Spec. Rhodod. 818. 1930; Davidian, Rhodod. Spec. 1: 388. 1982; 西藏植物志3: 630. 1986.

小灌木,高约60厘米。幼枝密生瘤突而粗糙,有鳞片。叶芽鳞宿存或早落。叶革质,长圆状倒卵形,长2-3.5厘米,宽1-2厘米,顶端圆,凹缺,有小短尖头,基部楔形渐狭,边缘反卷,上面暗绿或鲜绿色,有或无鳞片,下面散生腺点状鳞片,鳞片小或中等大小,褐色,不等大,相距为其直径的2-3或5倍,侧脉在上面凹陷;叶柄长2-3毫米,有鳞片。花序顶生,1-3花,伞形着生;花梗长1.3-2.2厘米,被鳞片;花萼深5裂,裂片卵形或长圆形,长2-4毫米,外面或基部有鳞片或无鳞片;花冠短钟状,长7-8毫米,淡粉红色,外面有鳞片;雄蕊10,不等长,与花冠近等长或稍短,花丝2/3以下被短柔毛,花药桔黄色;子房5室,密被鳞片,无毛,花柱短粗,直立或弯弓状,短于雄蕊,基部有鳞片。蒴果细长,长2-2.5厘米,直径约3毫米,从顶部向下开裂。种子细小,两端有长线形的尾。

产云南贡山(独龙江)、西藏察隅县下察隅与缅甸东北部接壤地区。附生在常绿树上、空旷牧草地中其他树种上以及矮林中苔藓覆盖的砾石上,海拔1 400-(-2 150)米。

知识共享:署名-非商业性使用-禁止演绎 1999《中国植物志》第57(1)卷 190页 PDF

Small shrubs, sometimes epiphytic, ca. 0.6 m tall; young shoots densely papillate, scaly. Petiole 2–3 mm, scaly; leaf blade leathery, oblong-obovate, 2–3.5 × 1–2 cm; base cuneate; margin revolute; apex rounded, emarginate, apiculate; abaxial surface scales 2–3(–5) × their own diameter apart, small or midsized, unequal, glandular, brown; adaxial surface dark or fresh green, scaly or not; lateral veins concave. Inflorescence terminal, umbellate, 1–3-flowered. Pedicel 1.3–2.2 cm, scaly; calyx deeply 5-lobed; lobes 2–4 mm, ovate or oblong, scales sometimes present at base abaxially; corolla shortly campanulate, pale pink, 0.7–0.8 cm, outer surface scaly; stamens 10, unequal, as long as or shorter than corolla; filaments pubescent in the lower 2/3; anthers orange-yellow; ovary 5-locular, densely scaly, glabrous; style stout, erect or arched, shorter than stamens; base scaly. Capsule long and slender, dehiscing from top, 20–25 × ca. 3 mm.

Epiphytic on evergreen trees or on trees in open grassland, moss-covered rocks; 1400–2200 m. SE Xizang, W Yunnan [Myanmar].

知识共享:署名-非商业性使用-禁止演绎 FOC Vol.14PDF
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