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Aspidistra daxinensis (Ruscaceae), a New Species from Limestone Areas in Guangxi, China

中國廣西石灰岩地區假葉樹科蜘蛛抱蛋屬一新種植物:大新蜘蛛抱蛋

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植物:大新蜘蛛抱蛋(Aspidistradaxinensis),提供線繪圖與彩色照片以資識別,並報導其染色體數(2n=36)與核型。大新蜘蛛抱蛋與長瓣蜘蛛抱蛋(A. longipetala) 相似,但前者柱頭上表面中心部稍隆起,光滑,具三條從中央呈放射狀排列的線紋,柱頭邊緣不明顯12淺裂,下表面紫紅色,具12條不等大之翅狀縱棱; 而後者柱頭上表面具縱棱形成的網紋,網眼6-8個,凹陷。大新蜘蛛抱蛋與齧邊蜘蛛抱蛋(A. marginella) 也近似,區別在於後者花被罈狀,花被裂片短於花被筒,兩側具狹的不規則齧蝕狀膜邊,柱頭上表面十字形隆起,紫黑色,具密集乳突。大新蜘蛛抱蛋甚爲稀有,目前僅知分布於廣西西南與越南北部毗連的大新縣。

並列摘要


Aspidistra daxinensis M. F. Hou & Yan Liu, a new species of Ruscaceae from the limestone areas in southwestern Guangxi, China, is described and illustrated. It resembles A. longipetala S. Z. Huang in the shape and size of the leaves and flowers, but differs in the yellowish-green perianth and glabrous stigma that is adaxially convex at the center with 3 radial lines. The new species is rare, currently known only from southwestern Guangxi, near the border with northern Vietnam.

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