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蜂腰石斛 Dendrobium findlayanum

时间:2013-10-23 19:00来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ):蜂腰石斛 学名( Scientific Name ): Dendrobium findlayanum Par. et Rchb. f. 英文名( English Common Name ): 别名( Chinese Common Name ): 棒节石斛 异名( Synonym ): Callista findlayana (E.C.Parish Rchb.f.)
中文名(Chinese Name):蜂腰石斛
学名(Scientific Name):Dendrobium findlayanum Par. et Rchb. f.
英文名(English Common Name):
别名(Chinese Common Name):棒节石斛
异名(Synonym):Callista findlayana (E.C.Parish & Rchb.f.) Kuntze
科属(Family & Genus):兰科(Orchidaceae)石斛属
形态特征(Description):茎直立或斜立,通常长约20厘米,粗7-10毫米,不分枝,具数节;节间扁棒状或棒状,长3-3.5厘米,基部常宿存纸质叶鞘。叶革质,互生于茎的上部,披针形,长5.5-8厘米,宽1.3-2厘米,先端稍钝并且不等侧2裂,基部具抱茎的鞘;总状花序通常从落了叶的老茎上部发出,具2朵花;花序柄长6-16厘米,基部被长约5毫米的膜质鞘;花苞片膜质,卵状三角形,长约6毫米;花梗和子房淡玫瑰色,长5-6厘米;花白色带玫瑰色先端,开展;中萼片长圆状披针形,长3.5-3.7厘米,宽9毫米,先端近钝尖,具5条脉;侧萼片卵状披针形,长3.5-3.7厘米,宽9毫米,先端近急尖,具5条脉;萼囊近圆筒形,长5毫米;花瓣宽长圆形,长3.5-3.7厘米,宽1.8厘米,先端急尖,基部稍收狭为短爪,具5条脉;唇瓣近圆形,凹的,宽约2.4厘米,先端锐尖带玫瑰色,基部两侧具紫红色条纹;唇盘中央金黄色,密布短柔毛;蕊柱前面具紫红色条纹,长约8毫米;药帽白色,顶端圆钝。花期3月。
分布(Distribution):产云南。生于海拔800~900米的山地疏林中树干上。缅甸、泰国、老挝也有。
用途(Use):
引自中国植物志英文版:FOC Vol. 25 Page 371, 378   
Dendrobium findlayanum E. C. Parish & H. G. Reichenbach, Trans. Linn. Soc. London. 30: 149. 1874.
棒节石斛 bang jie shi hu| Orchidaceae  | Dendrobium
Callista findlayana (E. C. Parish & H. G. Reichenbach) Kuntze.
Stems erect or ascending, ca. 20 cm, 7-10 mm in diam., unbranched, with several nodes, internodes compressed clavate or clavate, 3-3.5 cm, base often with persistent papery leaf sheaths. Leaves alternate on upper part of stem, lanceolate, 5.5-8 × 1.3-2 cm, leathery, base with clasping sheath, apex slightly obtuse and unequally bilobed. Inflorescences from old stems after leaves have fallen, 2-flowered; peduncle 6-16 cm; basal sheaths ca. 5 mm, membranous; floral bracts ovate-triangular, ca. 6 mm, membranous. Pedicel and ovary pale rose, 5-6 cm. Flowers spreading; sepals and petals white with roseate tip, lip base roseate, with purplish red stripes on both sides, disk golden yellow at center, column with purplish red stripes at front, anther cap white. Dorsal sepal oblong-lanceolate, 35-37 × ca. 9 mm, 5-veined, subobtuse to acute; lateral sepals ovate-lanceolate, 35-37 × ca. 9 mm, 5-veined, apex subacute; mentum subcylindric, ca. 5 mm. Petals broadly oblong, 35-37 × ca. 18 mm, 5-veined, base shortly clawed, apex acute; lip suborbicular, concave, ca. 24 mm wide, densely pubescent, acute. Column ca. 8 mm; anther cap bluntly rounded.
Epiphytic on tree trunks in open forests; 800-900 m. S Yunnan (Mengla) [N Laos, Myanmar, N Thailand].
This species was named after its collector, Mr. James Findlay (E. C. Parish in F. Mason, Burmah, ed. [4], 2: 159. 1883). The spelling used in the protologue must therefore be treated as an orthographical error.


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