Indocalamus is a genus of about 35 species of flowering plants in the grass family (Poaceae), native to China, Vietnam and Japan. They are quite small evergreen bamboos normally up to 2 m (6.6 ft) in height, initially forming clumps and then spreading to form larger thickets. They have thick, glossy leaves. Ruo leaves use to wrap foods like rice during dragon boat festival, originate in fujian refer to Indocalamus longiauritus originally but now are nonspecific to just about any leaf wrap. Some species were formerly included in Sasa and Sasamorpha.