Japanese name: ヒロハハナヤスリ(広葉花鑢) Scientific name:Ophioglossum vulgatum
[Overview]
A terrestrial fern 10–30 cm tall, growing in colonies along roadsides, at forest edges and inside forests in the mountains, and in grasslands.
Leaves emerge from around April and die back in summer.
The rhizome is fleshy and forms a short cylinder, with sparse roots.
Only one leaf emerges each year.
There are vegetative leaves and spore-bearing leaves; the vegetative leaf is broadly lanceolate to broadly ovate, 6–12 cm long and 2.5–7 cm wide, stalkless, with its base enclosing the stalk of the spore-bearing leaf.
It has distinct, finely netted veins, and the margin is entire.
The spore-bearing leaf emerges from the base of the vegetative leaf, is 10–20 cm long and stalked, and the spike part that bears the spores can exceed 3 cm in length.
The sporangia are arranged on both sides of the axis, and the outer wall of the spores has a coarse net pattern that looks like wart-like projections.
The leaf-bearing stalk (stalk) is 2–15 cm long.