Phyllostachys nigra

Bamboo: Can anyone please tell me whether you have seen black bamboo growing anywhere in India.

in our pune city lot of nursery’s selling black bamboo.

Even though Phyllostachya nigra [a native of China] is called Black Bamboo, the real Black Bamboo is Gigantochloa atroviolacea [a native of Java].
Both do not occur naturally in India.

mainly a garden plant, grown as a curiosity in our country.

I believe that a certain common bamboo is used for medicine.