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''Cyathea doctersii'' is a species of tree fern endemic to Sumatra, where it grows in forest at an altitude of approximately 150 m. The trunk is erect and 2-3 m tall. Fronds are bi- or tripinnate and 2-3 m long. The stipe is covered with scattered flat, brown scales and some hairs. Sori occur near the fertile pinnule midvein and are covered by thin, brown indusia that are scale-like in appearance. ''C. doctersii'' appears to be most closely related to ''Cyathea javanica''. Large and Braggins (2004) note that it may in fact be of hybrid origin between ''C. javanica'' and a member of the ''Cyathea latebrosa'' complex. The specific epithet ''doctersii'' commemorates botanist Willem Marius Docters van Leeuwen (1880-1960), who collected numerous plant species in Asia. ==References== *Braggins, John E. & Large, Mark F. 2004. ''Tree Ferns''. Timber Press, Inc., p. 126. ISBN 0-88192-630-2 *(The International Plant Names Index: ''Cyathea doctersii'' ) 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Cyathea doctersii」の詳細全文を読む スポンサード リンク
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