| 翻訳と辞書 |
Itatiella
''Itatiella ulei'' is a species of moss in the family Polytrichaceae. It is the only species in the genus ''Itatiella''. The Polytrichaceae is a common family of mosses that does not have close living relatives. Its small size and the inflexed leaf apex characterize ''Itatiella ulei''. When this species grows directly exposed to sun at high elevations, it presents a similar aspect but can be distinguished based on the distal lamella cells which are single and rhombic.
==Description==
''Itatiella ulei'' is dark green to brown 10-25mm long plant. Just like other moss, this plant divides into two parts, which are sporophyte and gametophyte. The stems are brown, straight and forming tufs. The rhizome is pale-brown and facing down on the ground. Leaves are 2.5-4.0mm long with the shape of oblong-lanceolate. This plant has hexagonal-quadratic cells that are thick walled. This plant is dioicous which means gametophytes produce sperm or eggs but never both. The perichaetium that surrounds the archegonia and the base of the seta is terminal and their leaves are long. The perigonium that surrounds the antheridia is also terminal and their leaves are short and broad. Its small size and the inflexed leaf apex characterize ''Itatiella ulei''. This species is growing directly exposed to sun at high elevations present a similar aspect but can be distinguished based on the distal lamella cells which are single and rhombic.
Sporophyte: The sporophytes are common, light brown with globose urns occurring on top of an erect, 5-10mm tall seta. The capsule is erect and symmetrical. The operculum is in a conic form. The operculum is equipped with long rostrate. The peristome teeth are absent so it’s known as gymnostomous. The calyptra is hood-shaped and split on one side only, which means it’s being cucullate.
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「Itatiella」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.
|
|