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箭药叉柱兰Cheirostylis monteiroi

时间:2013-10-23 16:42来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ): 箭药叉柱兰 学名( Scientific Name ): Cheirostylis monteiroi S. Y. Hu et Barretto 英文名( English Common Name ): 别名( Chinese Common Name ): 异名( Synonym ): 科属( Family Genus ): 兰科Orchidaceae叉
中文名(Chinese Name):箭药叉柱兰
学名(Scientific Name):Cheirostylis monteiroi S. Y. Hu et Barretto
英文名(English Common Name):
别名(Chinese Common Name):
异名(Synonym):
科属(Family & Genus):兰科Orchidaceae叉柱兰属Cheirostylis
形态特征Description):植株高9-13厘米。根状茎匍匐,橄榄绿色,肉质,具4-6节,节间长5-15毫米,节的中部粗6-10毫米,呈莲藕状。茎短,直立,具2-3枚叶。叶片卵形,长12-16毫米,宽8-10毫米,暗绿色,具较深色的脉,中肋在两面明显,先端急尖或渐尖,基部近心形,具柄;叶柄带紫绿色,长和宽各3-4毫米,鞘状抱茎。花茎细长,长7-9厘米,粗2毫米,被毛,上具3-7枚鞘状苞片;总状花序具2-8朵花;花苞片粉红色,舟状,长7毫米;子房圆柱形,长5-6毫米,粗1.5-2毫米,无毛;花小;萼片长5毫米,橄榄绿染粉红色,下部2/3处合生成筒状,外侧无毛,萼筒长3毫米,基部稍呈浅囊状,上部分离,分离部分长2毫米;花瓣白色,偏斜,倒披针形,与中萼片紧贴,长5毫米,宽1.5毫米;唇瓣长达11.5毫米,与蕊柱的基部贴生,基部肉质,边缘内弯,囊状,囊内两侧各具1枚白色、2裂、裂片为角状的胼胝体,中部具短爪,前部扩大,轮廓近圆形,直径7毫米,2裂,裂片基部无斑点,裂片之间的中部绿色,其余部分为白色,裂片边缘各具5-8条、长2毫米的丝状裂条;蕊柱短,长1毫米,扁圆柱形,背部膜质,下部肉质,顶部两侧具向前延伸成1条狭、渐尖的、长1.5毫米的臂状附属物;花药黄色,箭形,长1毫米;花粉团共同具1枚长1毫米、线状披针形的粘盘;蕊喙向前突出,叉状2裂,其裂片长1.5毫米,粘盘位于蕊喙的2裂片之间;柱头2个,侧生,位于蕊喙的基部两侧。花期3-5月。
分布Distribution):产于我国香港。生于海拔约300米的溪旁山坡陡壁林下阴处潮湿的石上或土壤中。
用途Use):
引自中国植物志英文版FOC Vol. 25 Page 58, 61      
Cheirostylis monteiroi S. Y. Hu & Barretto, Chung Chi J. 13(2): 15. 1976.
箭药叉柱兰 jian yao cha zhu lan | Orchidaceae  | Cheirostylis
Plants 9-13 cm tall. Rhizome olive-green, moniliform, with 4-6 nodes, internodes 5-15 mm, nodes 6-10 mm in diam.; roots hairlike, in narrow rows along rhizome internodes. Stem erect, short, ca. 2.5 cm, 2- or 3-leaved. Leaves congested, green with dark green venation, ovate, 1.2-1.6 × 0.8-1 cm, midvein conspicuous on both surfaces, base subcordate, apex acute or acuminate; petiole-like base and sheath purplish green, 0.3-0.4 cm. Inflorescence 7-9 cm, slender, pubescent, with 3-7 sterile bracts; rachis ca. 1 cm, 2-8-flowered; floral bracts purplish red, cymbiform, ca. 7 mm. Flowers small, glabrous; ovary and pedicel cylindric, 5-6 × 1.5-2 mm, glabrous. Sepals olive-green, tinged with pinkish red, ca. 5 mm, connate for ca. 3/5 of length and forming a tube; tube ca. 3 mm, base slightly swollen; free apical lobes ca. 2 mm. Petals appressed to dorsal sepal, white, oblanceolate, oblique, ca. 5 × 1.5 mm; lip 8-11.5 mm, 3-partite; hypochile saccate, fleshy, margin incurved, containing 2 bifid calli; mesochile short; epichile nearly orbicular in outline, ca. 7 mm, 2-lobed; lobes white, tinged with green at middle, margin deeply 5-8-laciniate, each division ca. 2 mm. Column cylindric, ca. 3 mm; stelidia ca. 1.5 mm, acuminate; anther yellow, broadly ovoid, ca. 1 mm; viscidium linear-lanceolate, ca. 1 mm; rostellum arms ca. 1.5 mm. Fl. Mar-May.
● In shade on damp rocks, along streams in forests; ca. 300 m. Hong Kong.




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