Gonocormus minutus (Bl.) vdB

Japanese: ウチワゴケ（英語表記）Gonocormus minutus (Bl.) v.d.B.

A fern that forms mats on rocks in the mountains and fields, on tree trunks, or on the ground. A small herbaceous plant of the Brynostigma family. The leaf diameter is 1.5 cm, and the plant is up to 2 cm tall. The rhizome is thin and branches as it creeps, forming a mat-like colony. The petiole is about 1 cm long and has no wings, very similar to the rhizome. The leaf blade spreads palmately, with irregularly cut edges, giving it a fan-like shape, hence the name Uchiwagoke (fan moss). The sporangia are attached to the leaf margins, the intumescent membrane is cup-shaped with slightly spreading edges, and the sporangia beds extend long.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

山野の岩上，樹幹上か地上にマットをつくるシダ植物。コケシノブ科の小草本。大きさは葉の径1.5cm，植物体の高さ2cmまで。根茎は細く，分枝しながらはうのでマット状のコロニーとなる。葉柄は根茎とよく似た形状で長さ約1cm，翼はない。葉身は掌状に広がり，縁は不規則に切れ込んで，うちわのような形になるのでウチワゴケ(団扇苔)と名づけられた。胞子囊群は葉縁につき，包膜はコップ状で縁がわずかに広がり，胞子囊床が長く伸びる。

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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