Arachniodes standishii(upside down fern, "Ryomenshida")
Japanese name: リョウメンシダ（両面羊歯） Scientific name:Arachniodes standishii
[Overview]
An evergreen fern that often forms colonies in damp places in woods in the mountains and along mountain streams.
A short underground stem creeps horizontally.
The fronds are large, 40–65 cm long and 15–30 cm wide, and three to four times pinnately compound.
The sori are borne on the lower half of the underside of the frond.
The spores contain chloroplasts and appear green.
Both surfaces of the frond are green and glossy, and if the sori are not present, the upper and lower sides look the same.
The stalk is 20–40 cm long, with dense brown scales at the base.
[Cultivation]
Propagate by division.
It prefers a place in partial shade that is well drained and retains water well.
It prefers an environment with high air humidity.
It is easy to grow.
Fertilizer is not particularly necessary.
There are no particular pests or diseases.
[Notes]
The Japanese name Ryomen-shida ("two-sided fern") was given because the upper and lower surfaces of the leaf cannot be told apart.
