Camptosorus sibiricus; walking fern

Japanese: クモノスシダ(英語表記)Camptosorus sibiricus; walking fern
Camptosorus sibiricus; walking fern
A small evergreen fern of the family Cerataceae, widely distributed in northeastern Asia, including Japan. It grows mostly on limestone, but sometimes on the ground as well. The leaves are slender, simple, and about 15 cm long, tapering at the tip and growing like a vine with a single adventitious bud at the tip. The edges of the leaves are often wavy and uneven. The sporangia are linear and of variable length. The slender leaves with buds that grow in all directions resemble a spider web, hence the name spider fern. A closely related species, C. rhizophyllus , grows in North America.

Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information

Japanese:
チャセンシダ科の小型の常緑性シダ植物で,日本を含めたアジアの北東部に広く分布している。石灰岩上に多く,ときには地上にも生える。葉は 15cm前後の細長い単葉で,先が次第に細くなりつる状に伸びて先端に1つの不定芽をつける。葉の縁辺は波形に凹凸することが多い。胞子嚢群は線形で長さは一定しない。芽をつけた細長い葉が四方に伸びた状態がクモの巣に似ているのでクモノスシダと呼ばれる。近縁の種 C. rhizophyllusは北アメリカに生育する。

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