Matonia (English spelling)

Japanese: マトニア(英語表記)Matonia
Matonia (English spelling)
This fern does not grow in Japan, but two genera and two species are known to exist in the Malay Peninsula, Borneo, and New Guinea (illustration). It is similar to the Polytrichum family, but differs in that the internal structure of the rhizome is complex, the leaves are repeatedly forked, and the sporangia have an insula. The distribution area of ​​the extant species is limited, but fossils have been found over a wide area since the early Mesozoic era, up to the vicinity of the Arctic, suggesting that it coexisted with the Polytrichum family and evolved in parallel.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:
日本には生育していないシダ植物で,マレー半島,ボルネオ,ニューギニアに2属2種が知られている(イラスト)。ウラジロ科に似ているところがあるが,根茎の内部構造が複雑で,葉は叉(さ)状分岐をくり返し,胞子囊群には包膜があるなどの点で異なっている。現生種の分布域は限られているが,化石では中生代の初期以来,北極近辺までの広い範囲で発見されており,ウラジロ科と共存しながら並行的に進化してきたことがうかがわれる。

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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