Iwadenda - Iwadenda

Japanese: イワデンダ - いわでんだ

This medium-sized fern grows on rocks, and its Japanese name is derived from this (illustration). Denda is also called renda, and is one of the old names for ferns. The stems are short, obliquely upward or upright, and the leaves grow in clusters. The petiole is 5-10 cm long and has small scales and hairs along the central axis. There is a joint at the apex of the petiole, and the leaf detaches from this point and falls off in autumn. The leaf is 15-40 cm long, has a linear lanceolate blade, and is simply pinnately compound. The pinnae spread out at right angles, are oblong, and have ear-like protrusions at the upper base. There is hair on the upper and lower surfaces, and hairy scales on the underside.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

岩上に生じる中型のシダで，和名もそれに由来する（イラスト）。デンダは連朶（れんだ）ともいい，シダの古い名の一つ。茎は短く斜上または直立し，葉を叢生（そうせい）する。葉柄は5～10cm，中軸と共に小さい鱗片と毛をつける。葉柄の頂端に関節があり，葉は秋にここから外れて落ちる。葉の全長は15～40cm，葉身は線状披針形，単羽状複葉である。羽片は直角に開出し，長楕円形で上側の基部は耳状に突き出ている。表裏面に毛があり，裏面には毛状鱗片がある。

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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