Cypripedium japonicum is
a perennial orchis species generally occurring in cryptomeria or
bamboo forests, its rhizomes extending sideways. Stems, 20-40cm in
height, have luxuriant white hair and some sheath-like small leaves
at the bases. Leaves, 10-20cm in diameter, are of a fan-shaped
circle, with prominent vertical wrinkles spreading out towards the
margins from the leaf bases. Flowers, 3-5cm in length, in the shape
of a bag, and light red-purple bloom on the stem ends. Very rare.
Bloom time: April-May.