This is Chimonobambusa tumidissinoda "Chinese Walking Stick", a fairly rare bamboo from the rainforests near Sichuan, China, that is used by locals to make walking sticks. The nodes look like two cymbals pressed together. This is a running bamboo that likes afternoon shade and does well in pots. In the ground its max ...height is 20 feet with 1.3 inch diameter culms. This photo is from my personal bamboo collection and was taken by Gerhard Bock.