|
''Dracoglossum'' is a small genus of ferns in the family Polypodiaceae, subfamily Lomariopsidoideae. It is native to the neotropics of the Americas. ''Dracoglossum'' was originally treated in ''Tectaria'', but is not related and was therefore described in family Dryopteridaceae. It appears to be most closely related to the genus ''Lomariopsis''.〔Maarten J.M. Christenhusz. 2007. "''Dracoglossum'', a new Neotropical fern genus (Pteridophyta)". ''Thaiszia Journal of Botany'' 17:1-10. (See ''External links'' below).〕 Molecular evidence has confirmed this placement and it is now placed firmly in subfamily Lomariopsidoideae, with which it share characters of habit and stelar structure.〔Maarten J.M. Christenhusz, Mirkka Jones and Samuli Lehtonen. 2013. "Phylogenetic placement of the enigmatic fern genus ''Dracoglossum''". ''American Fern Journal'' 103:131-138. doi: http://dx.doi.org/10.1640/0002-8444-103.2.131.〕 ;Species :There are two species: *''Dracoglossum plantagineum'' — in Central America, the Lesser Antilles, Puerto Rico, and sub-Andean South America. *''Dracoglossum sinuatum'' — in the Guianas and coastal Ecuador. The species differ in the presence or absence of an indusium covering each of their sori. ''Dracoglossum'' has a creeping rhizome. The leaves are simple and proliferate by vegetative buds (leaf buds) at the apex. == 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「Dracoglossum」の詳細全文を読む スポンサード リンク
|