Indocalamus

Indocalamus is a genus of about 35 species of flowering plants in the grass family (Poaceae), native to central and southern China, Hainan, Vietnam, and Laos. 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. Indocalamus latifolius, I. solidus and I. tessellatus are found in cultivation in temperate regions, being very hardy down to −15 °C (5 °F)....read more on Wikipedia.