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''Cyathea imrayana'' is a species of tree fern native to Dominica, Costa Rica, Panama, Venezuela, and Ecuador. The plant grows in submontane rain forest understorey and riparian zones on riverbanks, at an altitude of . ==Description== ''Cyathea imrayana'' is species with an erect trunk that is tall and in diameter. It is covered with sharp, blackish spines and pale brown hairs. Fronds are bipinnate, in length, and occur in whorls of five. The crown is large and spreading, especially in young plants. The rachis and stipe range in colouration from brown to dark brown and bear bicoloured scales (brown centre and paler margin) with a terminal seta. Scales on pinnule veins are whitish. Sori are round and borne on either side of the pinnule midvein, towards the base of the pinnule segment. They are protected by red-brown, globose indusia. ;Varieties There are two distinct varieties of this species. One is ''Cyathea imrayana'' var. ''caribaea'', which was originally described as a species. It is endemic to the island of Saint Vincent. The specific epithet ''imrayana'' commemorates plant collector John Imray (1811-1880), who collected the type material. This ''Cyathea imrayana'' is not to be confused with ''Cyathea imrayana'' used as a synonym of ''Cnemidaria grandifolia'' ((W. J. Hooker) Domin, 1929). 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 imrayana」の詳細全文を読む スポンサード リンク
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