Anemia (English spelling) flowering fern

Japanese: アネミア（英語表記）flowering fern

Native to Central America, this fern is now commonly cultivated as a greenhouse plant (illustration). Its English name comes from the fact that the lowest pinna of its unipinnate leaves becomes a sporophyll and assumes a flowering position. The rhizome is short, creeping, hairy and scaleless. The leaves have long petioles and the pinnae are ovate with a sharp tip and a broad wedge-shaped base. The sporangia are attached to the lowest pinna, but these pinnae have long stalks and do not extend beyond what could be called a leaf surface, with large sporangia attached in two rows to the small lobes. It is easy to grow in a pot, making it a valuable ornamental plant for greenhouses.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

中米原産で，今では温室植物として普通に栽培されるシダ（イラスト）。単羽状の葉の，最下羽片が胞子葉となり，花がつくような姿勢となることから英名がついた。根茎は短くはい，毛があって鱗片はない。葉は長い葉柄があり，羽片は卵状で，先端が鋭頭，基部は広いくさび形となる。胞子囊は最下羽片につくが，この羽片は長い柄をもち，葉面というべき広がりをもたず，小さな裂片に大きな胞子囊を2列につける。鉢植えで容易に栽培できるので，温室の観葉植物として重宝されている。

出典　株式会社平凡社世界大百科事典第２版について　情報

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