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长蕊杜鹃Rhododendron stamineum

时间:2018-06-26 11:13来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ):长蕊杜鹃 学名( Scientific Name ): Rhododendron stamineum Franch. 英文名( English Common Name ): 别名( Chinese Common Name ): 异名( Synonym ): Rhododendron cavaleriei var. chaffanjonii H. Lv. Rhododendr
中文名(Chinese Name):长蕊杜鹃
学名(Scientific Name):Rhododendron stamineum Franch.
英文名(English Common Name):
别名(Chinese Common Name):
异名(Synonym):Rhododendron cavaleriei var. chaffanjonii H. Lév.  Rhododendron esquirolii H. Lév.  Rhododendron pittosporifolium Hemsl.  Rhododendron chaffanjonii H. Lév. ex Hutch.  Rhododendron aucubifolium Hemsl.
科属(Family & Genus):杜鹃花科(Ericaceae) 杜鹃属
形态特征(Description):常绿灌木或小乔木,高约3-7米;幼枝纤细,无毛。叶常轮生枝顶,革质,椭圆形或长圆状披针形,长6.5-8厘米,稀达10厘米以上,宽2-3.5厘米,先端渐尖或斜渐尖,基部楔形,边缘微反卷,上面深绿色,具光泽,下面苍白绿色,两面无毛,稀干时具白粉,中脉在上面凹陷,下面凸出,侧脉不明显;叶柄长8-12毫米,无毛。花芽圆锥状,鳞片卵形,覆瓦状排列,仅边缘和先端被柔毛。花常3-5朵簇生枝顶叶腋;花梗长2-2.5厘米,无毛;花萼小,微5裂,裂片三角形;花冠白色,有时蔷薇色,漏斗形,长3-3.3厘米,5深裂,裂片倒卵形或长圆状倒卵形,长2-2.5厘米,上方裂片内侧具黄色斑点,花冠管筒状,长1.3厘米,向基部渐狭;雄蕊10,细长,伸出于花冠外很长,花丝下部被微柔毛或近于无毛;子房圆柱形,长4毫米,无毛,花柱长4-5厘米,超过雄蕊,无毛,柱头头状。蒴果圆柱形,长2-3(-4)厘米,微拱弯,具7条纵肋, 先端渐尖,无毛。花期4-5月,果期7-10月。
分布(Distribution):产安徽、浙江、江西、湖北、湖南、广东、广西、陕西、四川、贵州和云南。通常生于海拔500-1 600米的灌丛或疏林内。
用途(Use):
引自中国植物志英文版FOC Vol. 14 Page 426      
Rhododendron stamineum Franchet, Bull. Soc. Bot. France. 33: 236. 1886.
长蕊杜鹃 chang rui du juan | Apiaceae  | Rhododendron
Shrubs or small trees, 3–7 m tall; young shoots thin, glabrous. Petioles 8–20 mm, glabrous or shortly glandular-setose; leaf blade elliptic or oblong-lanceolate, 6.5–13 × 2–5.5 cm; base cuneate to subrounded; margin slightly revolute; apex acuminate or obliquely acuminate; abaxial surface rarely white-powdery when dried, glabrous or shortly setose towards base; adaxial surface glabrescent, veins obsolete. Inflorescence subapical, (3–)5–8-flowered; flower buds conical, scales ovate, imbricate, pubescent only on the margin and at the apex. Pedicel 2–2.5 cm, glabrous or grayish tomentose when young; calyx lobes minute, triangular, glabrous; corolla funnelform tapering into narrow tube, white to occasionally pink, the upper lobes with yellow flecks within, 3–3.5 cm, tube ca. 13 mm wide; stamens 10, slender, long-exserted, filaments puberulent in lower part; ovary cylindric, tapering into style, ca. 4 mm, glabrous or densely gray-white-tomentose when young; style 4–5 cm, longer than stamens. Capsule cylindric, slightly curved, apex acuminate, 25–40 mm, glabrous. Fl. Apr–May, fr. Jul–Oct.
Mixed forests, open forests, forest margins, thickets, mountains; 400–1500 m. Anhui, Guangdong, Guangxi, Guizhou, Hubei, Hunan, Jiangxi, Shanxi, Sichuan, Yunnan, Zhejiang.







 
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