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金钟藤Merremia boisiana

时间:2013-09-05 11:03来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ):金钟藤 学名( Scientific Name ): Merremia boisiana (Gagn.) v. Ooststr. 英文名( English Common Name ): 别名( Chinese Common Name ): 多花山猪菜 异名( Synonym ): Ipomoea boisiana Gagnep. 科属( Family Genu
中文名(Chinese Name):金钟藤
学名(Scientific Name):Merremia boisiana (Gagn.) v. Ooststr.
英文名(English Common Name):
别名(Chinese Common Name):多花山猪菜
异名(Synonym):Ipomoea boisiana Gagnep.
科属(Family & Genus):旋花科(Convolvulaceae)鱼黄草属
形态特征(Description):大型缠绕草本或亚灌木。茎圆柱形,干后灰褐色或黑褐色,无毛,具不明显的细棱,幼枝中空。叶近于圆形,偶为卵形,长9.5-15.5厘米,宽7-14厘米,顶端渐尖或骤尖,基部心形,全缘,两面近无毛或背面沿中脉及侧脉疏被微柔毛,侧脉7-10对,与中脉在叶面微凹,背面突起,第三次脉近于平行;叶柄长4.5-12厘米,无毛或近上部被微柔毛。花序腋生,为多花的伞房状聚伞花序,有时为复伞房状聚伞花序,总花序梗长5-24(-35)厘米,稍粗壮,下部圆柱形,灰褐色,无毛,向上稍扁平,连同花序梗和花梗被锈黄色短柔毛;苞片小,长1.5-2毫米,狭三角形,外面密被锈黄色短柔毛,早落;花梗长1-2厘米,结果时伸长增粗;外萼片宽卵形,长6-7毫米,外面被锈黄色短柔毛,内萼片近圆形,长7毫米,无毛,顶端钝;花冠黄色,宽漏斗状或钟状,长1.4-2厘米,中部以上于瓣中带密被锈黄色绢毛,冠檐浅圆裂;雄蕊内藏,花药稍扭曲,花冠内面基部自花丝着生点向下延成两纵列的乳突状毛;子房圆锥状,无毛。蒴果圆锥状球形,长1-1.2厘米,4瓣裂,外面褐色,无毛,内面银白色。种子三棱状宽卵形,长约5毫米,沿棱密被褐色糠粃状毛。
分布(Distribution):产海南、广西、云南等地,生于海拔120-680米的疏林湿润处或次生杂木林中。越南、老挝及印度尼西亚也有。
用途(Use):
引自中国植物志英文版FOC Vol. 16 Page 298      
Merremia boisiana (Gagnepain) van Ooststroom, Blumea. 3: 343. 1939.
金钟藤 jin zhong teng | Convolvulaceae  | Merremia
Twiners woody; axial parts glabrous or grayish yellow tomentose. Stems terete, fistulose. Petiole 4.5-12 cm; leaf blade nearly circular, rarely broadly ovate, 9.5-15.5 X 7-14 cm, glabrous or puberulent along veins abaxially, base cordate, margin entire, apex abruptly acuminate or cuspidate. Inflorescences corymbose cymes, many flowered; peduncle 5-24(-35) cm, terete and glabrous basally, slightly applanate distally, dull yellow pubescent, sometimes entirely grayish yellow tomentose; bracts early deciduous, narrowly triangular, 1.5-2 mm, densely yellowish pubescent. Pedicel 1-2 cm, enlarged in fruit. Sepals ± equal or outer ones slightly shorter, 6-13 mm; outer 2 broadly ovate, abaxially dull yellow pubescent; inner 3 nearly circular, glabrous, apex obtuse. Corolla yellow, broadly funnelform or campanulate, 1.4-2(-3.2) cm, midpetaline bands yellowish sericeous outside; limb undulate. Stamens included; filaments with 2 longitudinal pubescent lines below insertion; anthers belatedly twisted. Ovary conical, glabrous. Capsule brown, fading to yellow apically, conical-ovoid, 1-1.2 cm, glabrous. Seeds broadly trigonous-ovoid, ca. 5 mm, densely scaly pubescent along angles.
Forests; 100-1300 m. Guangxi, Hainan, Yunnan [Indonesia, Laos, Vietnam]









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