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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Droserapites ： ウィキペディア英語版 Droserapites ''Droserapites'' is a genus of extinct plants of somewhat uncertain droseracean affinity. It is a form taxon known only from fossil pollen. ''Droserapites'' pollen grains are united in tetrads (groups of four). Individual grains are inaperturate. The exine is mixed with dense, superposed clavate and baculate processes, whereas the sexine is reticulate.〔 Pollen of ''D. clavatus'' has been found in the Miocene Peliao Sandstone of Taiwan.〔 It generally matches that of extant ''Drosera'' in morphology.〔Song, Z.-C., W.-M. Wang & F. Huang 2004. Fossil pollen records of extant angiosperms in China. ''The Botanical Review'' 70(4): 425–458. 〕 In his formal description of the genus, Tseng-Chieng Huang suggested that ''Droserapites'' may be related to ''Droseridites'' and ''Quadrisperites''.〔 The tetrads of ''D. clavatus'' are tetrahedral and 34–40 µm in diameter. Individual grains are subspheroidal and measure 18–25 µm in width. They have a roughly circular amb that is abruptly acute at the distal pole. The exine is 0.5–1 µm thick, with 2–3 µm long clavae or bacula.〔 ==References== 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「Droserapites」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.