细柄买麻藤

细柄买麻藤
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中文名:细柄买麻藤拉丁学名:Gnetum gracilipes 界:植物界门:被子植物门种:细柄买麻藤分布区域:广西

细柄买麻藤(xì bǐng mǎi má téng)，学名 Gnetum gracilipes C. Y. Cheng，藤本，老枝多呈灰色。叶革质或半革质，窄矩圆形或窄椭圆形，稀椭圆形，长6-15厘米，宽2-5.5厘米，先端短渐尖或急尖，基部楔形，稀圆形，叶柄较细，长约1厘米。产于广西十万大山（模式标本产地）。 ^[1]

细柄买麻藤形态特征

藤本，老枝多呈灰色。叶革质或半革质，窄矩圆形或窄椭圆形，稀椭圆形，长6-15厘米，宽2-5.5厘米，先端短渐尖或急尖，基部楔形，稀圆形，叶柄较细，长约1厘米。

原图链接来自植物标本馆

雄球花序未见; 雌球花序不分枝，成熟时粗短，各轮之间相距6-1o毫米；种子包于光滑较薄的假种皮中，宽椭圆形或矩圆状椭圆形，两端窄尖，长达3厘米，径约1.5厘米,；

原图链接来自植物标本馆

先端急尖或稍有尖头，基部突然窄缩成细长的种子柄，柄长1.5-2.5厘米，径约2毫米，具不甚明显的纵槽。

分类文献

Gnetum gracilipes C. Y. Cheng,植物分类学报13 (4) : 88. 图64 . 1-3. 1975.

Vines; old branches usually gray. Petiole slender, ca. 1 cm; leaf blade narrowly oblong or narrowly elliptic, sometimes elliptic, 6-15 × 2-5.5 cm, leathery or nearly so, base cuneate or sometimes rounded, apex shortly acuminate or acute.

Male inflorescences once branched, occasionally twice; male spikes with 12-16 involucral collars, each collar with 50-60 flowers plus 10-14 sterile female flowers, basal hairs forming a dense cushion.

Female inflorescences axillary, unbranched, short and thick when ripe; female spikes with involucral collars 6-10 mm apart. Seeds broadly ellipsoid or oblong-ellipsoid, 2.5(-3) × 1.5-1.6 cm, base cuneate into a stipe, apex acute or subacute, outer coat thin and smooth; stipe 1.5-2.5 cm × ca. 2 mm, with inconspicuous, longitudinal grooves.

Mountain slopes. S Guangxi (Shangsi Xian), SE Yunnan (Xichou Xian)

Shows many similarities to the rather poorly known Gnetum latifolium Blume var. longipes (Markgraf) Hiep, from Cambodia, New Guinea, the Philippines, and probably Vietnam, and may indeed prove to be the same taxon. The information available suggests that there is a discontinuity between G. latifolium var. longipes and other varieties of G. latifolium, and so the Chinese taxon is here treated as a distinct species.^[2]