| 翻訳と辞書 |
Megaceros
''Megaceros'' is a genus of hornworts in the family Dendrocerotaceae. The genus is found in the Old World tropics of east Asia and Australia. Its name means 'big horn', and refers both to the exceptionally large size of the gametophyte thallus and to the large, horn-shaped sporophyte that the plants produce. Many species have a branching thallus that is more than two centimeters wide. The gametophytes are monoicous.
The genus ''Megaceros'' is unusual among hornworts in that the sporophyte does not have stomata, and the spores are green because they contain chloroplasts, as does the related genus ''Dendroceros''. The thallus cells often contain more than one chloroplast, as opposed to other hornwort genera. The elaters are helical.
The genus ''Megaceros'' was first recognized in 1907 by D. Campbell. More recently, the genera ''Nothoceros'' and ''Phaeomegaceros'' have been split off from this genus. The former genus includes all New World species previously included in ''Megaceros''.〔
== References ==
* Parihar, N. S. (1961). ''An Introduction to Embryophyta, Volume I''. Allahbad: Central Book Depot.
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「Megaceros」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.
|
|