Sour grass (yellow grass, hilo grass, johnston river grass)

Paspalum conjugatum

Creeping perennials with long leafy stolons rooting at the nodes and forming loose mats.

Culms erect or ascending, to c. 1 m tall; nodes pubescent or glabrous, those of the stolons usually conspicuously pilose. Sheaths hairy on the margins and at the junction with the blade; ligule truncate, c. 1 mm long; blade 5–13 mm wide, glabrous or sparingly hairy, scabrous or stiffly hairy on the margins.