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离萼杓兰Cypripedium plectrochilum

时间:2013-10-23 18:29来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ):离萼杓兰 学名( Scientific Name ): Cypripedium plectrochilum Franch. 英文名( English Common Name ): 别名( Chinese Common Name ): 异名( Synonym ): Cypripedium Sect. Arietinum C. Morren 科属( Family Genu
中文名(Chinese Name):离萼杓兰
学名(Scientific Name):Cypripedium plectrochilum Franch.
英文名(English Common Name):
别名(Chinese Common Name):
异名(Synonym):Cypripedium Sect. Arietinum C. Morren
科属(Family & Genus):兰科(Orchidaceae)杓兰属
形态特征(Description):植株高12-30厘米,具粗壮、较短的根状茎。茎直立,被短柔毛,基部具数枚鞘,鞘上方通常具3枚叶,较少为2或4枚叶。叶片椭圆形至狭椭圆状披针形,长4.5-6厘米,宽1-3.5厘米,先端急尖或短渐尖,上面近无毛,背面脉上偶见微柔毛。花序顶生,具1花;花序柄纤细,被短柔毛;花苞片叶状,椭圆状披针形或披针形,长2-3厘米,宽7-8毫米,先端渐尖或急尖,边缘略有缘毛;花梗和子房长1.5-2.5厘米,密被短柔毛;花在属中为较小者;萼片栗褐色或淡绿褐色,花瓣淡红褐色或栗褐色并有白色边缘,唇瓣白色而有粉红色晕;中萼片卵状披针形,长1.6-1.8厘米,宽7-8毫米,先端急尖,内外基部稍被毛,边缘具细缘毛;侧萼片完全离生,线状披针形,长1.6-1.8厘米,宽仅2毫米,先端渐尖或急尖,基部与边缘亦具与中萼片相似的毛;花瓣线形,长1.6-2.1厘米,宽1-2毫米,内表面基部具短柔毛;唇瓣深囊状,倒圆锥形,略斜歪,长1.6-2.4厘米,宽约1厘米,末端钝,囊口周围具短柔毛,囊底亦有毛;退化雄蕊宽倒卵形或方形的倒卵形,长5-6毫米,基部具很短的柄,背面有龙骨状突起。蒴果狭椭圆形,长约2厘米,宽5-6毫米,有棱,棱上被短柔毛。花期4-6月,果期7月。
分布(Distribution):产湖北、四川、云南和西藏。生于海拔2000~3600米的林下、林缘、灌丛中或草坡上多石之地。缅甸也有。
用途(Use):
引自中国植物志英文版:
FOC Vol. 25 Page 22, 28
Cypripedium plectrochilum Franchet, Bull. Soc. Bot. France. 32: 27. 1885.
离萼杓兰 li e shao lan| Orchidaceae  | Cypripedium
Cypripedium arietinum Franchet (1885), not R. Brown (1813).
Plants 12-30 cm tall, with a stout, rather short rhizome. Stem erect, pubescent, with several sheaths at base and 3 or rarely 2 or 4 leaves above. Leaf blade elliptic to narrowly elliptic-lanceolate, 4.5-6 × 1-3.5 cm, abaxial veins occasionally puberulent, adaxially subglabrous, apex acute or shortly acuminate. Inflorescence terminal, with 1 flower; peduncle slender, pubescent; floral bracts foliaceous, elliptic-lanceolate or lanceolate, 2-3 × 0.7-0.8 cm, slightly ciliate, apex acuminate or acute; pedicel and ovary 1.5-2.5 cm, densely pubescent. Flowers relatively small; sepals and petals chocolate-brown or greenish brown, petals usually with a white margin; lip and staminode white, tinged with pink. Dorsal sepal ovate-lanceolate, 1.6-1.8 × 0.7-0.8 cm, slightly hairy at base, minutely ciliate, apex acute; lateral sepals free, linear-lanceolate, 1.6-1.8 × 0.2-0.3 cm, slightly hairy at base, apex acuminate or acute. Petals linear, 1.6-2.1 × 0.1-0.2 cm, pubescent toward adaxial base; lip deeply pouched, obconic, slightly oblique, 1.6-2.4 × ca. 1 cm, pubescent around mouth, inner bottom hairy, obtusely tipped. Staminode obovate or square-obovate, 5-6 mm, abaxially carinate, with a very short stalk at base. Capsule narrowly ellipsoid, ca. 2 cm × 5-6 mm, ridged, sparsely pubescent along ridges. Fl. Apr-Jun, fr. Jul. 2n = 20.
Forests, forest margins, thickets, stony and grassy slopes; 2000-3600 m. W Hubei, W Sichuan, SE Xizang, C and NW Yunnan [Myanmar].




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