Hongu fern - Hongu fern

Japanese: ホングウシダ - ほんぐうしだ

An evergreen small herb of the fern family Polypteridaceae that grows in colonies on damp rocks in the mountains (illustration). The rhizome runs short and transverse, with shiny dark brown, thin, bristly scales. The base of the petiole is reddish brown and has the same scales as the rhizome. The upper part is light brown. The leaf surface is once pinnately branched, linear lanceolate, and large ones can reach 30 cm in length. The pinnae are triangular-oblong, with a round to obtuse head, almost straight on the underside, straight to slightly convex on the upper side, and notched. Sporangia are attached to the connecting veins, which are made up of 2 to 3 vein ends, and are covered with an insula.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

山中の湿った岩上に群生するシダ植物ホングウシダ科の常緑性の小草本（イラスト）。根茎は短く横走し，光沢のある暗褐色で細い剛毛状の鱗片をつける。葉柄基部は赤褐色となり，根茎と同じ鱗片をつける。上部は薄茶色。葉面は1回羽状に分岐し，線状披針形，大きいものでは30cmに達する。羽片は三角状長楕円形，円頭から鈍頭，下側はほぼ一直線で，上側は直線からわずかに凸形となり，切れ込みがある。2～3本の脈端を連ねた連結脈に胞子囊がつき，包膜におおわれる。

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

<<: This official business

>>: Mount Hongu