Hanawarabi (flower fern) - Hanawarabi (English spelling) Sceptridium ternatum; grape fern

Japanese: ハナワラビ(花蕨) - ハナワラビ（英語表記）Sceptridium ternatum; grape fern

A wintergreen fern of the family Scutellariae, also known as Fuyuwarabi. It is widely distributed in the temperate zone of eastern Asia and up to the Himalayas, growing in sunny areas of mountains and plains. The leaves grow upright from thin fleshy underground stems, bifurcating at the base. One is a vegetative leaf with a long stalk, deeply pinnately lobed 3-4 times. The other is a sporophyte leaf divided 4 times, with thin lobes only on the axis, and large sporangia grow in clusters around the axis. The sporophyte leaves are much longer and upright than the vegetative leaves. The spores are spherical, tetrahedral, and yellow. The closely related species S. japonicum has deeply pinnately lobed vegetative leaves, is slightly larger than this species, and has sparse gray long hairs on the petioles and rachises.

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

Japanese:

ハナワラビ科の冬緑性シダ植物で，フユワラビともいう。アジア東部の温帯およびヒマラヤにまで広く分布し，山地や原野の日当りのよいところに生える。肉質の細い地下茎から葉を直立して基部でふたまたに分れ，1つは長い柄をもつ栄養葉で3～4回羽状に深裂する。他は4回羽状に分れた胞子葉で，裂片は軸だけで細く，軸の周囲に大型の胞子嚢を群生する。胞子葉は栄養葉よりはるかに長く直立する。胞子は球形の四面体型で黄色。近縁種のオオハナワラビ S. japonicumは栄養葉が3回羽状に深裂し，本種よりやや大型で，葉柄や羽軸に灰色の長毛がまばらに生える。

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