What is spotted bamboo? The origin of bamboo

Spotted bamboo: Xiangfei bamboo. After the death of Shun, his concubines, E Huang and NV Ying, cried in the Xiang water, and their tears spilled on the bamboo, and the bamboo poles were streaked.

Tang Liu Yuxi "Tai Niang Song" : "How to put this thousand lines of tears, more sprinkled Xiangjiang bamboo branches."