Megathyrsus maximus, known as Guinea grass and green panic grass in English, is a large perennial bunch grass that is native to Africa, Israel and Yemen. It has been introduced in the tropics around the world. Until 2003, it was named Urochloa maxima. It was moved to genus Megathyrsus, which it shares with one other species, M. infestus.
Megathyrsus maximus grows naturally in open grasslands, usually under or near trees and shrubs and along riverbanks. It can withstand wildfire and drought. The ...