Guinea Grass

Megathyrsus maximus

Family: Poaceae

Description: Rhizomatous (short) perennial with culms up to 2.5 m tall and 1 cm tick. Sheaths typically shorter than the internodes; collars densely pubescent; blades flat and up to 1 m long. Small, light green seeds in inflorescence.

Location: Lower Gulf Coast from Galveston to Brownsville.

Soil Type: Sand and clay.

Trivia: Introduced from Africa. Sometimes cultivated as a forage crop.

Economic, Environmental Importance: Invasive and tends to form a monoculture, aggressively taking up space over native plants.