What is "arundinarieae"

Arundinarieae is a tribe of bamboo in the grass family ( Poaceae), placed in its own supertribe Arundinarodae and containing a single subtribe, Arundinariinae, and 30 genera. These woody bamboos occur in areas with temperate climate in Eastern North America, Subsaharan Africa, South Asia and East Asia. The tribe forms a lineage independent of the tropical woody bamboos ( Bambuseae) and the tropical herbaceous bamboos ( Olyreae).