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蝶花杜鹃 diehuadujuan

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 aberconwayi Cowan
中文名
蝶花杜鹃
拼音
diehuadujuan
文献 Literature
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描述 Description

98.蝶花杜鹃(云南植物志)图版44:4-7

Rhododendron aberconwayi Cowan in Rhodod. Year-book. 1948: 42. 1948; Cullen et Chamb. in Not. Bot. Card. Edinb. 36: 117. 1978; Chamb. in Not. Bot. Gard. Edinb. 39: 293. 1982; 云南植物志4: 370. 1986.

常绿灌木,高约1-1.5米;枝条细瘦,有密集的叶着生;幼枝被疏绒毛及腺体;老枝光滑无毛,叶痕明显。叶小,厚革质,卵状椭圆形或卵状披针形,长2.5-5厘米,宽1-1.8厘米,先端急尖,有小尖头,基部宽楔形或圆形,边缘明显的向下反卷,上面亮绿色,平滑无毛,下面淡绿色,有散生的红色小点,中脉在上面下陷成沟纹,在下面显著隆起,侧脉8-9对,在上面不明显,在下面微隆起;叶柄圆柱状,长5-10毫米,上面平坦,中央有浅沟,微被绒毛。总状伞形花序,有花7-11朵;总轴粗壮,长1-2.5厘米,密被淡黄色绒毛,无腺体;花梗长1.5-3.5厘米,有短柄腺体;花萼小,盘状,5浅裂,裂片长仅1毫米,外面及边缘有硬毛及腺体;花冠碗状或钟状,开展近成蝶形,长2-3厘米,口部直径3-4厘米,白色或粉红色,有深红色斑点,5裂,裂片近圆形,长1.3厘米,宽1.5厘米,顶端圆形,微有凹缺;雄蕊10,不等长,长1-1.5厘米,花丝无毛,花药长圆形,长达3毫米;子房圆锥形,长约4毫米,直径约2毫米,密被短柄腺体及硬毛,花柱短于花冠,长约1.3厘米,通体被腺体,柱头微膨大。蒴果粗壮,长约1.8厘米,直径约1厘米,成熟后开裂,9-10室。花期5月,果期10月。

产云南中部。生于海拔2 200-2 500米的山坡、沟边的灌木丛中。模式标本采自云南禄丰。

本种叶片较小,厚革质,下面有散生的红色小点,叶柄短,长仅5-10毫米,扁平;花冠开展成蝶形,白色或粉红色,子房及花柱密被腺体,区别较易。

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 134页 PDF

Shrubs, 1.5–2.5 m tall; older branches glabrous; branches slender; young shoots puberulent and glandular. Petiole cylindric, 5–10 mm, sparsely tomentose; leaf blade thick, leathery, ovate-elliptic or ovate-lanceolate, 2.5–5 × 1–1.8 cm; base broadly cuneate or rounded; margin strongly revolute; apex acute; abaxial surface pale, with red punctate hair bases on veins; adaxial surface smooth, glabrous, midrib slightly raised abaxially, grooved adaxially; lateral veins 8–9-paired. Inflorescence racemose-umbellate, 7–11-flowered; rachis stout, 10–25 mm, densely tomentose, eglandular. Pedicel 1.5–3.5 cm, glandular-hairy; calyx discoid; lobes 5, ca. 1 mm; sparsely hairy, glandular-ciliate; corolla open-cup- or saucer-shaped, white or pink with purple flecks, 2–3 cm, without nectar pouches; lobes 5, orbicular, ca. 1.3 × 1.5 cm, emarginate; stamens 10, unequal, 1–1.5 cm, filaments glabrous; ovary conoid, ca. 4 × 2 mm, 9- or 10-locular; style ca. 1.3 cm, glandular-hairy to tip. Capsule 18–2 × ca. 10 mm. Fl. May, fr. Oct.

Thickets on slopes; 2200–2500 m. NC Yunnan.

The present authors have seen no material of Rhododendron maxiongense C. Q. Zhang & D. Paterson (Novon 13: 156. 2003), described from NE Yunnan. It is very close to R. aberconwayi, but the trivial nature of the cited distinguishing features (plants lower, 0.6–0.9 m; corolla without dark flecks; stamens pilose below) suggests that the two species are conspecific.

知识共享:署名-非商业性使用-禁止演绎 FOC Vol.14PDF
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