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流苏石斛 Dendrobium fimbriatum

时间:2013-10-23 18:59来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ):流苏石斛 学名( Scientific Name ): Dendrobium fimbriatum Hook. 英文名( English Common Name ): 别名( Chinese Common Name ): 异名( Synonym ): Dendrobium fimbriatum var. oculatum Hook. f. Callista fimbriat
中文名(Chinese Name):流苏石斛
学名(Scientific Name):Dendrobium fimbriatum Hook.
英文名(English Common Name):
别名(Chinese Common Name):
异名(Synonym):Dendrobium fimbriatum var. oculatum Hook. f.  Callista fimbriata (Hook.) Kuntze  Callista normalis (Falc.) Kuntze  Callista oculata (Hook.) Kuntze  Dendrobium normale Falc.  Dendrobium fimbriatum var. occulatum Hook.f.
科属(Family & Genus):兰科(Orchidaceae)石斛属
形态特征(Description):茎粗壮,斜立或下垂,质地硬,圆柱形或有时基部上方稍呈纺锤形,长50-100厘米,粗8-12 (-20) 毫米,不分枝,具多数节,干后淡黄色或淡黄褐色,节间长3.5-4.8厘米,具多数纵槽。叶二列,革质,长圆形或长圆状披针形,长8-15.5厘米,宽2-3.6厘米,先端急尖,有时稍2裂,基部具紧抱于茎的革质鞘。总状花序长5-15厘米,疏生6-12朵花;花序轴较细,多少弯曲;花序柄长2-4厘米,基部被数枚套叠的鞘;鞘膜质,筒状,位于基部的最短,长约3毫米,顶端的最长,达1厘米;花苞片膜质,卵状三角形,长3-5毫米,先端锐尖;花梗和子房浅绿色,长2.5-3厘米;花金黄色,质地薄,开展,稍具香气;中萼片长圆形,长1.3-1.8厘米,宽6-8毫米,先端钝,边缘全缘,具5条脉;侧萼片卵状披针形,与中萼片等长而稍较狭,先端钝,基部歪斜,全缘,具5条脉;萼囊近圆形,长约3毫米;花瓣长圆状椭圆形,长1.2-1.9厘米,宽7-10毫米,先端钝,边缘微啮蚀状,具5条脉;唇瓣比萼片和花瓣的颜色深,近圆形,长15-20毫米,基部两侧具紫红色条纹并且收狭为长约3毫米的爪,边缘具复流苏,唇盘具1个新月形横生的深紫色斑块,上面密布短绒毛;蕊柱黄色,长约2毫米,具长约4毫米的蕊柱足;药帽黄色,圆锥形,光滑,前端边缘具细齿。花期4-6月。
分布(Distribution):产广西、贵州、云南的海拔600~1700米密林树干上或山谷阴湿岩石上。东南亚也有分布。
用途(Use):
引自中国植物志英文版:FOC Vol. 25 Page 371, 386, 399  
Dendrobium fimbriatum Hooker, Exot. Fl. 1: ad t. 71. 1823.
流苏石斛 liu su shi hu| Orchidaceae  | Dendrobium
Callista fimbriata (Hooker) Kuntze; C. oculata (Hooker) Kuntze; Dendrobium fimbriatum var. oculatum Hooker; D. paxtonii Paxton.
Stems rigid, decumbent or pendulous, cylindric or sometimes slightly fusiform above base, 50-100 cm, stout, 8-12(-20) mm in diam., unbranched, with many nodes, internodes 3.5-4.8 cm, longitudinally grooved, pale yellow or pale yellowish brown when dry. Leaves oblong or oblong-lanceolate, 8-15.5 × 2-3.6 cm, leathery, with tightly clasping leathery sheaths at base, apex acute, sometimes slightly bilobed. Inflorescences racemose, 5-15 cm, laxly 6-12-flowered; peduncle 2-4 cm; rachis thin, ± curved; basal sheaths several, overlapping, tubular, basal one shortest, ca. 3 mm, terminal ones to 10 mm, membranous; floral bracts ovate-triangular, 3-5 mm, membranous, apex acute. Pedicel and ovary pale green, 2.5-3 cm. Flowers slightly fragrant, spreading, thinly textured; sepals and petals golden yellow, lip a deeper hue, with purplish red stripes on either side at base, disk with a lunate transverse deep purple marking. Dorsal sepal oblong, 13-18 × 6-8(or more) mm, 5-veined, margin entire, apex obtuse; lateral sepals ovate-lanceolate, ca. as long as dorsal sepal and slightly narrower, 5-veined, base oblique, margin entire, apex obtuse; mentum rotund, ca. 3 mm. Petals oblong-elliptic, 12-19 × 7-10(or more) mm, 5-veined, margin slightly erose, apex obtuse; lip suborbicular, 15-20 mm, adaxially densely pubescent, base narrowed into a claw ca. 3 mm, margin compound fimbriate. Column ca. 2 mm, foot ca. 4 mm; anther cap conic, glabrous, front margin denticulate.
Epiphytic on tree trunks in dense forests, lithophytic on damp rocks in mountain valleys; 600-1700 m. NW to S Guangxi, S Guizhou, S Yunnan [Bhutan, India, Myanmar, Nepal, Thailand, Vietnam].





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