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1
題名:Begonia fangii (sect. Coelocentrum, Begoniaceae), a new species from limestone areas in Guangxi, China     (14點)
中國廣西石灰岩地區秋海棠屬側膜組一新種:方氏秋海棠
著者:Ching-I Peng(彭鏡毅) ;Yu-Min Shui(稅玉民) ;Yan Liu(劉演) ;Shin-Ming Ku(古訓銘)
出版地區:台灣
出版城市:台北市
學科:生命科學
關鍵字:方氏秋海棠 ; 掌葉秋海棠 ; 廣西掌葉秋海棠 ; 側膜組 ; 中國 ; 染色體數 ; 廣西 ; 石灰岩植物 ; 新種 ; Begonia fangii ; Begonia hemsleyana ; Begonia hemsleyana var. kwangsiensis ; China ; Chromosome number ; Guangxi ; Limestone flora ; New species ; Sect. Coelocentrum
刊名:Botanical Bulletin of Academia Sinica
頁碼:83-89
語言:英語
摘要: 中文摘要PDF ; 英文摘要PDF

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。
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).


    

本卷期目次
Botanical Bulletin of Academia Sinica
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