@@Phyllostachys nigra Munro var. Henonis form. Boryana Makino
@@Phyllostachys nigra form. boryana Makino

Kyoto Rakusai Bamboo Park
"Unmon" means shape of clouds, because "Unmon-chiku" means the bamboo which has several spots shaped clouds on culm surface.

This cloud can be seen like a shape of small whirlpool which is 2-5cm in diameter and very rare bamboo.

This is one type of Phy. nigra henonis, because culm size is similar with it.

There are a few cultivation areas around Kyoto and Hyogo Prefectures.
Culm is prized as the materials for making bamboo art handicrafts.