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茎花崖爬藤Tetrastigma cauliflorum

时间:2018-06-29 12:01来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ):茎花崖爬藤 学名( Scientific Name ): Tetrastigma cauliflorum Merr. 英文名( English Common Name ): 别名( Chinese Common Name ): 异名( Synonym ): Tetrastigma membranaceum C. Y. Wu ex W. T. Wang 科属( Fam
中文名(Chinese Name):茎花崖爬藤
学名(Scientific Name):Tetrastigma cauliflorum Merr.
英文名(English Common Name):
别名(Chinese Common Name):
异名(Synonym):Tetrastigma membranaceum C. Y. Wu ex W. T. Wang
科属(Family & Genus):葡萄科(Vitaceae)崖爬藤属
形态特征(Description):木质大藤本,茎扁压,灰褐色。小枝微扁,有纵棱纹,无毛。卷须不分枝,相隔2节间断与叶对生。叶为掌状5小叶,小叶长椭圆形、椭圆披针形或倒卵长椭圆形,长8-18厘米,宽3.5-9厘米,顶端短尾尖,基部阔楔形或近圆形,边缘每侧有5-9个锯齿,通常齿粗大,伸展,上面绿色,下面浅绿色,两面均无毛;侧脉6-8对,网脉上面不明显,下面突出,无毛;叶柄长10-15厘米,小叶柄长1-4厘米,中央小叶柄比侧生小叶柄长2-3倍,无毛。花序长9-11厘米,着生在老茎上,基部有节,节上有苞片,二级分枝4,集生成伞形,三级分枝4,集生成伞形或二歧状多分枝,花数朵呈小伞形集生于末级分枝顶端;花序梗长2.5-8厘米,无毛或被短柔毛;花梗长2-8毫米,被短柔毛;花蕾长圆形或卵圆形,高1-3毫米,顶端钝或圆形;萼碟形,齿不明显,被短柔毛;花瓣4,卵圆形,高0.8-2.5毫米,顶端呈头盔状,外面被乳突状毛;雄蕊4,花丝丝状,花药黄色,卵圆形,长宽近相等,在雌花内雄蕊短小,花药扁平呈龟头形,败育;花盘在雄花内发达,浅4裂,在雌花内不明显;雌蕊在雄花内完全退化,在雌花内子房卵圆形,花柱不明显,柱头浅4裂。果实椭圆形或卵球形,长1.5-2厘米,宽1.2-2厘米,干时皱缩,种子1-4颗。种子椭圆形,两端近圆形,背腹侧扁,种脐在种子背面基部向上呈狭带形,达种子顶端,腹面中棱脊狭窄,两侧洼穴呈沟状从基部向上达种子顶端,于上部向外伸展。花期4月,果期6-12月。
分布(Distribution):产广东、广西、海南、云南,生海拔100-1000米山谷林中。越南和老挝也有分布。
引自中国植物志英文版:FOC Vol. 12 Page 196, 201 
Tetrastigma cauliflorum Merrill, Lingnan Sci. J. 11: 48. 1932.
茎花崖爬藤 jing hua ya pa teng| Vitaceae  | Tetrastigma
Tetrastigma membranaceum C. Y. Wu ex W. T. Wang.
Lianas, woody. Stem grayish brown, flat. Branchlets slightly flat, with longitudinal ridges, glabrous; tendrils unbranched. Leaves palmately 5-foliolate; petiole 10-15 cm; petiolules 1-4 cm, central petiolule 2-3 × as long as lateral petiolules, glabrous; leaflets oblong, elliptic-lanceolate, or obovate-elliptic, 8-18(-22) × 3.5-9 cm, glabrous, lateral veins 6-8 pairs, veinlets raised abaxially, inconspicuous adaxially, base broadly cuneate or subrounded, margin 5-9-toothed on each side, teeth usually large, apex cuspidate. Inflorescence umbelliform or a compound dichasium, cauliflorous, 9-11 cm, with nodes and bracts; peduncle 2.5-8 cm, glabrous or pubescent. Pedicel 2-8 mm, pubescent. Buds elliptic or oval, 1-3 mm, apex obtuse or rounded. Calyx saucer-shaped, pubescent, teeth inconspicuous. Petals oval, 0.8-2.5 mm, apex galeate, papillose. Filaments filiform; anthers yellow, oval. Disk well developed and 4-lobed in male flowers, inconspicuous in female flowers. Pistil in male flower abortive; ovary oval in female flowers; style inconspicuous; stigma 4-lobed. Berry elliptic or ovoid, 1.5-2 × 1.2-2 cm, 1-4-seeded. Seeds elliptic, flat, base and apex subrounded, ventral holes furrowed from base to apex. Fl. Apr, fr. Jun-Dec.
Forests in valleys; 100-1100 m. Guangdong, Guangxi, Hainan, Yunnan [Laos, Vietnam].




 


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