墨脱乌蔹莓查看源代码讨论查看历史
墨脱乌蔹莓 |
中文学名:墨脱乌蔹莓 拉丁学名:Cayratia medogensis C. L. Li 界:植物界 门:被子植物门 纲:双子叶植物纲 目:葡萄目 科:葡萄科 属:乌蔹莓属 种:墨脱乌蔹莓 分布区域:西藏 |
墨脱乌蔹莓(mò tuō wū liǎn méi),学名 Cayratia medogensis C. L. Li,是葡萄科植物,半木质藤本,花期5月。生林中,海拔约900米。模式标本采自墨脱。 [1]
墨脱乌蔹莓形态特征
半木质藤本。小枝圆柱形,有纵棱纹,无毛。
叶为鸟足状5小叶,小叶卵椭圆形,长3.5-8.5厘米,宽2.5-4.5厘米,顶端骤尾尖,基部阔楔形或近圆形,侧小叶基部不对称,近圆形,边缘有不整齐牙齿,略为外展或前伸,上面绿色,下面浅绿色,两面均无毛;
侧脉6-8对,网脉不明显;叶柄长5-8厘米,中央小叶柄长1.8-2.2厘米,比侧生小叶柄长两倍以上,无毛;托叶早落。
花序腋生,为伞房状聚伞花序;花序梗长1-8厘米,无毛;花梗长1-1.5毫米,被短柔毛,花蕾卵圆形,高约1.5毫米,顶端圆形;萼碟形,边缘近全缘,外面被短柔毛;
花瓣4,卵椭圆形,高约1.2毫米,外面密被灰白色短柔毛;雄蕊4,花药卵圆形,长宽近相等;
花盘发达,波状4浅裂;子房下部与花盘合生,花柱短,与子房一体呈圆锥形,柱头不扩大。花期5月。[2]
Cayratia medogensis C. L. Li in Chin. J. Appl. Environ. Biol. 2 (1) : 50. 1996.
英文介绍
Lianas, semiwoody. Branchlets terete, with longitudinal ridges, glabrous. Leaves pedately 5-foliolate; stipules caducous; petiole 5-8 cm; central petiolule 1.8-2.2 cm, ca. 2 × as long as lateral petiolules, glabrous; leaflets ovate-elliptic, 3.5-8.5 × 2.5-4.5 cm, glabrous, lateral veins 6-8 pairs, veinlets inconspicuous, base broadly cuneate or subrounded, apex cuspidate; lateral leaflets with asymmetric, subrounded base, margin with irregular teeth, slightly bent outward or forward. Corymbose polychasium axillary; peduncle 1-8 cm, glabrous. Pedicel 1-1.5 mm, pubescent. Buds oval, ca. 1.5 mm, apex rounded. Calyx saucer-shaped, pubescent, nearly entire. Petals ovate-elliptic, ca. 1.2 mm, with dense gray-white hairs. Anthers oval. Lower part of ovary adnate to disk; style short, coniform with ovary at base; stigma not expanded. Fl. May.
● Forests; ca. 900 m. Xizang.
墨脱乌蔹莓生长环境
生长于海拔约900米的森林中。
墨脱乌蔹莓分布范围
墨脱乌蔹莓相似物种
本种与乌蔹莓C.japonica(Thunb.)Gagnep.近似,但本种叶片顶端骤尾尖,叶边缘有不整齐牙齿,外展或前伸,花柱与子房为一体呈圆锥状,很不相同。[4]