Paspalum setaceum var. stramineum
Plants erect to spreading. Leaves mostly cauline; blades to 30 cm long, 3.3-13.5 mm wide, lax to somewhat stiff, glabrous or with a few hairs along the midrib, sometimes pubescent, yellow-green to dark green, margins scabrous, ciliate. Panicle branches 4-12 cm; branch axes 0.6-1.1 mm wide. Spikelets 1.7-2.4 mm long, 1.5-2.1 mm wide, obovate to suborbicular, pubescent or occasionally glabrous; lower lemmas without an evident midvein; upper florets 1.7-2.1 mm.