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漏斗杜鹃 loudoudujuan

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 dasycladoides Hand. -Mazz.
中文名
漏斗杜鹃
拼音
loudoudujuan
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描述 Description

72.漏斗杜鹃(云南植物志)图版32:6-9

Rhododendron dasycladoides Hand. -Mazz. Symb. Sin. 7: 791. 1936; Cullen et Chamb. in Not. Bot. Gard. Edinb. 36: 119. 1978; Chamb. in Not. Bot. Gard. Edinb. 39: 277. 1982: 云南植物志4: 397. 1986.

常绿灌木或小乔木,高约2-5米;枝条粗壮,花序下的枝直径约3-4毫米,幼枝嫩绿色,密被腺毛,老枝灰白色,无毛。叶常密生于枝顶,薄革质,窄卵状椭圆形至长椭圆形,长4-10厘米,宽2-3.5厘米,先端短尖或渐尖,有细尖头,基部圆形或微心形,上面深绿色,有密皱纹,无毛,下面淡绿色,幼时被稀疏腺毛,以后脱落至无毛,中脉在上面下陷,有浅沟纹,在下面隆起,被密腺头刚毛,侧脉14-16对,在两面仅微现;叶柄粗短,长1-1.5厘米,密被腺头刚毛。总状伞形花序,有5-8花;总轴锥形,长2-5毫米,密被短柔毛;花梗粗壮,长1-1.2厘米,被长柄腺体;花萼大,5裂,萼片长圆状椭圆形或卵状椭圆形,长5-8毫米,宽2-4毫米,顶端圆形,外面及边缘有稀疏硬毛,内面无毛;花冠漏斗状,长2.8-3.5厘米,玫瑰色,喉部有紫色斑点,5裂,裂片圆形,长约1.2厘米,顶端有凹缺;雄蕊10,长约1.2-2.2厘米,不等长,下部较宽,微被柔毛,花药长圆状椭圆形,长约3毫米;子房卵圆形,长约4-5毫米,密被硬毛,花柱微长于花冠,长2.5-3厘米,无毛;柱头不膨大。蒴果圆柱状,长约3厘米,直径5毫米,弯弓形。花期5月,果期不明。

产四川西南部、云南西北部。生于海拔3 050-4 000米的林中。模式标本采自四川木里。

本种与毛枝多变杜鹃 R. selense.Franch. subsp. dasycladum (Balf. f. et W. W. Smith) Chamb. 相近,但是本种幼枝、叶柄及花梗上密被腺毛及长柄腺体;叶长椭圆形,基部圆形或心形,花萼大,长约5-8毫米,外面及边缘有稀疏硬毛等特征不同,较易于区别。

知识共享:署名-非商业性使用-禁止演绎 1994《中国植物志》第57(2)卷 096页 PDF

Shrubs or small trees, 2–5 m tall; old branches grayish white, glabrous; shoots stout, 3–4 mm in diam. below inflorescence; young shoots greenish, densely glandular-hairy. Petiole stout and short, 10–15 mm, densely glandular-setose; leaf blade thinly leathery, narrowly ovate-elliptic to long-elliptic, 4–10 × 2–3.5 cm; base rounded or subcordate; apex acute or acuminate, apiculate; abaxial surface greenish, sparsely glandular-hairy when young, glabrescent, midrib densely glandular-setose; adaxial surface deep green, densely rugulose, glabrous; midrib raised abaxially, impressed adaxially; lateral veins 14–16-paired, inconspicuous on both surfaces. Inflorescence racemose-umbellate, 5–8-flowered; rachis conical, 2–5 mm, densely pubescent. Pedicel stout, 1–1.2 cm, with long-glandular hairs; calyx lobes 5, large, oblong-elliptic or ovate-elliptic, apex rounded, outer surface and margin sparsely setose, 5–8 × 2–4 mm; corolla funnelform, rose-pink, throat with purple spots, 2.8–3.5 cm, lobes 5, rounded, ca. 1.2 cm, apex emarginate; stamens 10, unequal, 1.2–2.2 cm, filaments slightly hairy, anthers oblong-elliptic, ca. 3 mm; ovary ovate, 4–5 mm, densely setose; style 2.5–3 cm, slightly longer than corolla, glabrous; stigma not expanded. Capsule cylindric, curved, ca. 30 × 5 mm. Fl. May.

Forests; 3000–4000 m. SW Sichuan, NW Yunnan.

知识共享:署名-非商业性使用-禁止演绎 FOC Vol.14PDF
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