- 期刊
Begonia Fangii (Sect. Coelocentrum, Begoniaceae), a New Species from Limestone Areas in Guangxi, China
中國廣西石灰岩地區秋海棠屬側膜組一新種：方氏秋海棠
摘要
本文發表中國廣西壯族自治區西南部石灰岩地區的秋海棠屬側膜組(Begonia sect. Coelocentrum)的一個新種：方氏秋海棠(Begonia fangii)，提供照片與繪圖，並報導其染色體數(2n=30)。方氏秋海棠外形略似掌葉秋海棠(B. hemsleyana)，都具有掌狀複葉，主要差別在於方氏秋海棠具有匍匐延長的根狀莖、葉片具有(3-) 4-5 (-7)枚小葉、花柱3枚、以及子房具有一室的側膜胎座；而掌葉秋海棠具有直立莖與短根莖、葉片具有(6-) 7-10 (-12)枚小葉、花柱2枚、子房兩室、中軸胎座、染色體數為2n=22。
並列摘要
Begonia fangii, a new species of sect. Coelocentrum from limestone areas in southwestern Guangxi Zhuang Autonomous Region, China, is described and illustrated. Somatic chromosome number (2n=30) is here reported. Begonia fangii is similar to B. hemsleyana (sect. Platycentrum) in having palmately compound leaves, but it is sharply distinct in having long creeping stem (vs. erect stem with a short rhizome); leaf with (3-)4-5(-7) [vs. (6-)7-10(-12)] leaflets; styles 3 (vs. 2); and ovary 1-locular with parietal placentation (vs. ovary 2-locular with axile placentation).
被引用紀錄
延伸閱讀
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