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題 名 | Begonia Pulvinifera (Sect. Diploclinium, Begoniaceae), a New Species from Limestone Areas in Guangxi, China=中國廣西石灰岩地區秋海棠科秋海棠組一新種:腫柄秋海棠 |
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作 者 | 彭鏡毅; 梁慧舟; 古訓銘; 劉演; | 書刊名 | Botanical Studies |
卷 期 | 47:3 民95.07 |
頁 次 | 頁319-327 |
分類號 | 373.49 |
關鍵詞 | 腫柄秋海棠; 少瓣秋海棠; 昌感秋海棠; 秋海棠科; 中國; 廣西; 石灰岩植物; 新種; 稀有植物; 秋海棠組; 分類學; Begonia pulvinifera; Begonia wangii; Begonia cavaleriei; Begoniaceae; China; Guangxi; Limestone flora; New species; Rare species; Sect. diploclinium; Taxonomy; |
語 文 | 英文(English) |
中文摘要 | 本文報導中國廣西壯族自治區西南部石灰岩地區秋海棠屬秋海棠組植物一新種:「腫柄秋海棠」。本新種葉柄基部具葉枕,此特徵非常獨特,未見於中國其他秋海棠屬植物。相似種類有少瓣秋海棠與昌感秋海棠:但本新種葉背面淺綠色,葉柄基部紅棕色、膨大,雄花花被片四枚,雌花花被片三枚,花被片先端圓鈍,且子房通體具中軸胎座,有別於少瓣秋海棠;此外,新種之托葉三角形,先端漸尖或驟尖,葉身較窄,葉柄基部具葉枕,卵狀苞片先端尖或漸尖,明顯不同於昌感秋海棠。腫柄秋海棠目前僅發現有一個族群,分佈於中國與越南邊境附近,數量稀少。 |
英文摘要 | Begonia pulvinifera, a new species of sect. Diploclinium from limestone areas in southwestern Guangxi Zhuangzu Autonomous Region, China, is described and illustrated. This new species is unique in having pulvinate petioles, a feature not known in any other species of Begonia in China. Begonia pulvinifera is similar to B. wangii T. T. Yü, differing in the lower surface of the leaf being pale green; petiole with a reddish brown swollen base; tepals obtuse; tepals of staminate flowers 4; tepals of carpellate flowers 3 and ovary with axile placentation throughout. Begonia pulvinifera also resembles B. cavaleriei Lév., but is distinguishable by the narrower leaf; pulvinate petiole; stipules triangular with apex acuminate or cuspidate; and ovate bracts with apex acute or acuminate. Begonia pulvinifera is rare, currently known only from one population near the border of China and Vietnam. |
本系統中英文摘要資訊取自各篇刊載內容。