Perennial grass native to tropics.

Spiny, annual grass; invasive weed.

Genus of grasses, includes sandburs.

Cenchrus purpureus, synonym Pennisetum purpureum, also known as Napier grass, elephant grass or Uganda grass, is a species of perennial tropical grass native to African grasslands.[Farrell, G., Simons, S. A., & Hillocks, R. J.. Pests, diseases, and weeds of Napier grass, Pennisetum purpureum: a review.

The tropical grass species (previously Pennisetum clandestinum) known by several common names, most often Kikuyu grass.

Cenchrus setaceus, commonly known as crimson fountaingrass, is a C4 perennial bunch grass that is native to open, scrubby habitats in East Africa, tropical Africa, the Middle East and south-western Asia.