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中华叉柱兰Cheirostylis chinensis

时间:2013-10-23 16:40来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ): 中华叉柱兰 学名( Scientific Name ): Cheirostylis chinensis Rolfe 英文名( English Common Name ): 别名( Chinese Common Name ): 中国指柱兰、指柱兰、台湾指柱兰 异名( Synonym ): Cheirostylis taiwanensis Ya
中文名(Chinese Name):中华叉柱兰
学名(Scientific Name):Cheirostylis chinensis Rolfe
英文名(English Common Name):
别名(Chinese Common Name):中国指柱兰、指柱兰、台湾指柱兰
异名(Synonym):Cheirostylis taiwanensis Yamam.  Cheirostylis philippinensis Ames  Cheirostylis josephi Schltr.
科属(Family & Genus):兰科Orchidaceae叉柱兰属Cheirostylis
形态特征(Description):植株高6-20厘米。根状茎匍匐,肉质,具节,呈毛虫状。茎圆柱形,直立或近直立,淡绿色,无毛,具2-4枚叶。叶片卵形至阔卵形,绿色,膜质,长1-3厘米,宽7.5-17毫米,先端急尖,基部近圆形,骤狭成柄;叶柄长3-10毫米,下部扩大成抱茎的鞘。花茎顶生,长8-20厘米,被毛,具3-4枚鞘状苞片;总状花序具2-5朵花,长1-3厘米;花苞片长圆状披针形,凹陷,长5-8毫米,先端长渐尖,背面被毛,较子房短或近等长;子房圆柱状纺锤形,被毛,具花梗,连花梗长7-8毫米;花小;萼片长3-4毫米,膜质,近中部合生成筒状,外面被疏毛,分离部分为三角状卵形,长1.7-1.8毫米,先端近钝,均具1脉;花瓣白色,膜质,偏斜,弯曲,狭倒披针状长圆形,呈镰刀状,长3-4毫米,中部宽1.2-1.5毫米,先端钝,具1脉,与中萼片紧贴;唇瓣白色,直立,长7-8毫米,基部稍扩大,囊状,囊内两侧各具1枚梳状、带(4-)5一6枚齿且扁平的胼胝体,中部收狭成爪,爪短,前部极扩大,扇形,长约5毫米,2裂,2裂片平展时宽7-8毫米,裂片边缘具4-5枚不整齐的齿;蕊柱短,长约1毫米,蕊柱的2枚臂状附属物直立,与蕊喙的2裂片近等长;柱头2个,较小,位于蕊喙的基部两侧。花期1-3月。
分布Distribution):产于台湾、香港、广西、贵州。生于海拔200-800米的山坡或溪旁林下的潮湿石上覆土中或地上。菲律宾也有分布。
用途Use):
引自中国植物志英文版FOC Vol. 25 Page 58, 62      
Cheirostylis chinensis Rolfe, Ann. Bot. (Oxford). 9: 158. 1895.
中华叉柱兰 zhong hua cha zhu lan| Orchidaceae  | Cheirostylis
Cheirostylis philippinensis Ames; C. taiwanensis Yamamoto.
Plants 6-20 cm tall. Rhizome creeping, torose to moniliform, to 10 cm; roots in rows along rhizome internodes. Stem ascending, pale green, 1-3 cm, 2-4-leaved. Leaves subrosulate, green, ovate or broadly ovate, 1-3 × 0.7-1.7 cm, membranous, base rounded, apex acute; petiole-like base and sheath 0.3-1 cm. Inflorescence 5-18 cm, pubescent, with 3 or 4 sterile bracts; rachis 1-3 cm, 2-6-flowered; floral bracts oblong-lanceolate, concave, 5-8 mm, nearly as long as ovary, abaxially hairy, apex long acuminate. Flowers small; ovary green, cylindric-fusiform, 7-8 mm including pedicel, sparsely pubescent. Sepals 3-4 mm, basal 1/2 connate and forming a tube, membranous, outer surface sparsely pubescent, 1-veined; free apical lobes triangular-ovate, ca. 1.8 mm, apex subobtuse. Petals appressed to dorsal sepal, white, narrowly oblanceolate-oblong, oblique, falcate, 3-4 × 1.2-1.5 mm, membranous, 1-veined, apex obtuse; lip erect, white, 5-7 mm, 3-partite; hypochile saccate, containing 2 comblike calli, each callus (4 or)5- or 6-toothed; mesochile ca. 1 mm, narrow; epichile with 2 green spots at base, flabellate, ca. 3.5 mm, 2-lobed; lobes ca. 3 mm, margin 4- or 5-dentate, teeth triangular with acute tips. Column ca. 2.5 mm; stelidia erect, nearly as long as rostellum; anther pinkish, ovoid, ca. 1.5 mm; viscidium narrowly oblong, ca. 1 mm; rostellum arms ca. 1.5 mm. Fl. Jan-Mar.
Damp rocky soils in forests, along streams; 200-800 m. Guangxi, Guizhou, Hainan, C and S Taiwan [Myanmar, Philippines, Vietnam].


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