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Aspidistra obconica, Asparagaceae [Ruscaceae], a New Species from Limestone Areas in Guangxi, China

中國廣西石灰岩地區天門冬科蜘蛛抱蛋屬一新種:錐花蜘蛛抱蛋

摘要


本文報導中國廣西壯族自治區西南部石灰岩地區蜘蛛抱蛋屬一新種,即錐花蜘蛛抱蛋(Aspidistra obconica)。該新種的花被倒圓錐形鐘狀,雌蕊亦呈倒圓錐狀,明顯可與蜘蛛抱蛋属其它種類區別。錐花蜘蛛抱蛋的染色體數目為2n = 38,核型公式為2n = 24m(上标 2SC) + 2sm + 12st。此新種目前僅知分佈於廣西西南與越南北部毗連的大新縣。本文提供了該新種的線繪圖、彩色圖版與植物地理分佈圖。

並列摘要


Aspidistra obconica C. R. Lin & Yan Liu (Asparagaceae) is described and illustrated as a new species from the limestone areas in southwestern Guangxi, China. The new species is easily distinguished from all other members of Aspidistra by the obconic perianth and pistil. A somatic chromosome number of 2n = 38 and a karyotype formula 2n = 24m(superscript 2SC) + 2sm + 12st were determined for A. obconica. The new speciesis known only from Daxin County, which lies at the border between Guangxi and northern Vietnam. Colorplates, line drawings and a distribution map are provided to aid in identification.

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