墨脫烏蘞莓
墨脫烏蘞莓 |
中文學名:墨脫烏蘞莓 拉丁學名:Cayratia medogensis C. L. Li 界:植物界 門:被子植物門 綱:雙子葉植物綱 目:葡萄目 科:葡萄科 屬:烏蘞莓屬 種:墨脫烏蘞莓 分布區域:西藏 |
墨脫烏蘞莓(mò tuō wū liǎn méi),學名 Cayratia medogensis C. L. Li,是葡萄科植物,半木質藤本,花期5月。生林中,海拔約900米。模式標本采自墨脫。 [1]
目錄
墨脫烏蘞莓形態特徵
半木質藤本。小枝圓柱形,有縱棱紋,無毛。
葉為鳥足狀5小葉,小葉卵橢圓形,長3.5-8.5厘米,寬2.5-4.5厘米,頂端驟尾尖,基部闊楔形或近圓形,側小葉基部不對稱,近圓形,邊緣有不整齊牙齒,略為外展或前伸,上面綠色,下面淺綠色,兩面均無毛;
側脈6-8對,網脈不明顯;葉柄長5-8厘米,中央小葉柄長1.8-2.2厘米,比側生小葉柄長兩倍以上,無毛;托葉早落。
花序腋生,為傘房狀聚傘花序;花序梗長1-8厘米,無毛;花梗長1-1.5毫米,被短柔毛,花蕾卵圓形,高約1.5毫米,頂端圓形;萼碟形,邊緣近全緣,外面被短柔毛;
花瓣4,卵橢圓形,高約1.2毫米,外面密被灰白色短柔毛;雄蕊4,花葯卵圓形,長寬近相等;
花盤發達,波狀4淺裂;子房下部與花盤合生,花柱短,與子房一體呈圓錐形,柱頭不擴大。花期5月。[2]
Cayratia medogensis C. L. Li in Chin. J. Appl. Environ. Biol. 2 (1) : 50. 1996.
英文介紹
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.
墨脫烏蘞莓生長環境
生長於海拔約900米的森林中。