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问客杜鹃 wenkedujuan(承先杜鹃)
Synonyms:
Rhododendron chengshienianum D. Fang

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 ambiguum Hemsl.
中文名
问客杜鹃
拼音
wenkedujuan
别名
承先杜鹃
异名
Rhododendron chengshienianum D. Fang
文献 Literature
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描述 Description

50.问客杜鹃(中国高等植物图鉴)承先杜鹃(峨眉植物图志)图版15:1-3

Rhododendron ambiguum Hemsl. in Curtis's Bot. Mag. 137: t. 8400. 1911; Rehd. et Wils. in Sargent, Pl. Wils. 1: 518. 1913; Hutch in Stevenson, Spec. Rhod. 784. 1930; Bean, Trees and Shrubs, 3: 21. 1951; Davidian in Rhodod. and Cam. Year. Book. 17: 173. 1963;中国高等植物图鉴3: 59. 图4071. 1974; Cullen in Not. Roy. Bot. Gard. Edinb. 39: 78. 1980; Davidian, Rhodod. Spec. 1: 345. 1982;中国四川杜鹃花202. 1986; 横断山区维管植物下册1430. 1994.——R. chengshienianum Fang, Icon. Pl. Omei. 1 (1) : Pl. 36. 1942; 中国高等植物图鉴3: 59. 图4072. 1974.

灌木,高1-3米。幼枝细长,密被腺体状鳞片。叶革质,椭圆形,卵状披针形或长圆形,长4-8厘米,宽1.8-3厘米,顶端渐尖、锐尖或钝,有短尖头,基部宽楔形至钝形,上面被鳞片,幼叶中脉被毛或无毛,下面灰绿色,被黄褐色或褐色鳞片,鳞片不等大,相距为其直径或小于直径;叶柄长6-10毫米,密被腺鳞。花序顶生,稀同时腋生枝顶,3-4(-7)花,伞形着生或短总状;花序轴2-4毫米;花梗长0.5-1厘米,被鳞片;花萼长0.5-1毫米,环状或波状浅裂,被鳞片;花冠黄色、淡黄色或淡绿黄色,内面有黄绿色斑点和微柔毛,宽漏斗状,略两侧对称,长3-3.5厘米,外面被鳞片;雄蕊不等长,长1.8-4.5厘米,花丝下部密被短柔毛;子房5室,密被鳞片,花柱细长,伸出花冠外,洁净。蒴果长圆形,长0.6-1.5厘米。花期5-6月,果期9-10月。

产四川中部及西部。生于灌丛或林地,海拔2 300-3 300(-4 500)米。模式标本采自四川西部(无确切产地)。

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 067页 PDF

Shrubs, 1–3 m tall; young shoots thin, densely glandular-scaly. Petiole 6–10 mm, densely glandular-scaly; leaf blade leathery, elliptic, ovate-lanceolate or oblong, 4–8 × 1.8–3 cm; base broadly cuneate to obtuse; apex acuminate, acute or obtuse, apiculate; abaxial surface gray-green, scales to 1 × their own diameter apart, unequal, yellowish brown or brown; adaxial surface scaly, young leaves with midrib hairy or not. Inflorescence terminal, rarely subterminal, umbellate or shortly racemose, 3–4(–7)-flowered; rachis 2–4 mm. Pedicel 0.5–1 cm, scaly; calyx rimlike or undulate, 0.5–1 mm, scaly; corolla broadly funnelform-campanulate, yellow or pale yellow, or pale greenish yellow, inside with yellowish green markings and pubescent, 3–3.5 cm, outer surface scaly; stamens unequal, 1.8–4.5 cm; filaments densely pubescent below; ovary 5-locular, densely scaly; style longer than corolla, glabrous. Capsule cylindric, 6–15 mm. Fl. May–Jun, fr. Sep–Oct.

Forests, thickets; 2300–3300(–4500) m. C and W Sichuan.

Geng et al. (in Acta Phytotax. Sin. 41: 493. 2003) proposed that Rhododendron ambiguum should be treated as a synonym of R. wongii. The holotype specimen of R. wongii is reputed to be very poor and may be depauperate. There is evidently little to separate these two species.

知识共享:署名-非商业性使用-禁止演绎 FOC Vol.14PDF
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