Phyllostachys nigra , commonly known as black bamboo, is a species of bamboo, native to Hunan Province of China, and is widely cultivated elsewhere. Growing up to 25 m (82 ft) tall by 30 cm (1 ft) broad, it forms clumps of slender arching canes which turn black after two or three seasons. The abundant lance-shaped leaves are 4–13 cm (2–5 in) long.