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锈红毛杜鹃 xiuhongdujuan

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 bureavii Franch.
中文名
锈红毛杜鹃
拼音
xiuhongdujuan
文献 Literature
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描述 Description

144. 锈红杜鹃(云南植物研究)锈红毛杜鹃(云南植物志)图版65:1-4

Rhododendron bureavii Franch. in Bull. Soc. Bot. France 34: 281. 1887; Hemsl. in Journ. Linn. Soc. Bot. 26: 21. 1889; Tagg in Stevenson, Spec. Rhodod. 637. 1930; Hand. -Mazz. Symb. Sin. 7: 783. 1936; Chamb. in Not. Bot. Gard. Edinb. 35: 259. 1977 et in ibid. 39: 338. 1982; Cullen et Chamb. in Not. Bot. Gard. Edinb. 36:119. 1978; 中国四川杜鹃花137-139. 1986; 云南植 物志4: 421. 1986.-R. cruentum Levl. in Fedde, Repert. Sp. Nov. 12:284. 1913 et Cat. Pl. Yunn. 89. 1916; Tagg in ibid. 640. 1930; Rehd. in Journ. Arn. Arb. 15: 269. 1934. ——R. bureaviodes Balf. f. in Not. Bot. Gard. Edinb. 13: 33. 1920; Tagg in ibid. 638. 1930.

常绿灌木,高1-4米;幼枝密被锈红色至黄棕色厚绵毛,混生红色腺体,直径5-7毫米。叶厚革质,椭圆形至倒卵状长圆形,长6-14厘米,宽2.5-5厘米,先端急尖或渐尖,具细小尖头,基部钝或近于圆形,上面深绿色,光亮,微皱,无毛,中脉凹入,侧脉12-15对,微凹,下面密被一层锈红色至黄棕色绵毛状厚毛被,由分枝毛组成,中脉凸起,被毛,侧脉隐藏于毛被内;叶柄粗,长1-2厘米,密被锈红色绵毛状分枝绒毛。顶生短总状伞形花序.有花10-20朵,总轴短,长2-3毫米,密被锈红色绵毛状分枝毛,混生腺体;花梗长1.5-2厘米,密被绒毛和腺体;花萼大,长5-10毫米,5深裂几达基部,裂片长圆形,外面密被柔毛和腺体,边缘具腺头睫毛;花冠管状钟形或钟形,长3-4.5厘米,白色带粉红色至粉红色,内面基部具深红色斑和微柔毛,向上具紫色斑点,裂片5,近圆形,长约1.5厘米,宽2厘米,顶端微缺;雄蕊10,不等长,长1.5-2.8厘米,花丝基部被白色微柔毛,花药椭圆形,暗褐色,长2.5毫米;雌蕊比花冠稍短或近相等;子房卵圆形,长4-5毫米,密被短柄腺体和柔毛,有时仅被腺体,花柱基部被短柄腺体,有时还有长柔毛。蒴果长圆柱形,长1.5-2厘米,直径约1厘米。花期5-6月,果期8-10月。

产四川西南部和西北部、云南西北部和东北部。生于海拔2 800-4 500米的高山针叶林下或杜鹃灌丛中。模式标本采自云南鹤庆。

本种幼枝、叶柄、叶背、花梗以及花序总轴均密被锈红色绵毛状厚毛被,并混生小腺体,花萼大,长5-10毫米,子房和花柱基部密被有柄腺体和柔毛或仅被腺体而无毛,易与其它种相区别。

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 196页 PDF

Shrubs, 1–4 m tall; young shoots densely rusty-red to tawny woolly-tomentose, sometimes mixed with red-glands. Petiole 10–20 mm, rust-red woolly-tomentose; leaf blade leathery, elliptic to obovate-oblong, 6–14 × 2.5–5 cm; base obtuse or subrounded; apex acute or acuminate, apiculate; abaxial surface rust-red to tawny, densely woolly, hairs branched; adaxial surface shiny, glabrous. Inflorescence racemose-umbellate, 10–20-flowered; rachis and pedicels densely rust-red woolly-tomentose, hairs branched, and with glandular hairs. Pedicel 1.5–2 cm; calyx lobes 5, 5–10 mm, oblong, pubescent and glandular on lower half outside, margin glandular-ciliate; corolla tubular-campanulate or campanulate, white flushed pink to pink, with purple dots inside, 3–4.5 cm, lobes 5; stamens 10, unequal, filaments pubescent at base; ovary ovoid, 4–5 mm, densely glandular-hairy and long-hairy, sometimes glandular only; style ca. 3 cm, similarly glandular-hairy and hairy. Capsule oblong-cylindric, 15–20 × ca. 10 mm, with vestiges of glands and hairs. Fl. May–Jun, fr. Aug–Oct.

Coniferous forests, Rhododendron thickets, mountain slopes; 2800–4500 m. W Sichuan, N Yunnan.

Field observations suggest that Rhododendron bureavioides should be treated as a distinct species. It differs in having a bistrate indumentum.

知识共享:署名-非商业性使用-禁止演绎 FOC Vol.14PDF
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