Panicum laevinode

Tufted annual or short-lived perennial. Culms erect, to 80 cm high; nodes glabrous. Leaves glabrous; sheath pale; blade flat, to 15 cm long, 3–8 mm wide; ligule 1.5–2.5 mm long, ciliate. Panicle 8–15 cm long, fully exserted at maturity, primary and secondary branches remaining appressed, or if spreading, remaining inclined to main axis. Summit of pedicel more or less circular. Spikelets 2.3–3.1 mm long; lower glume apparently nerveless or weakly 1-nerved, obtuse, without a central point, 0.5–1.2 mm long; rachilla barely exposed between glumes; upper glume 7-(rarely 9-)nerved, acute to acuminate, 2–3 mm long; lemma of lower floret equal to upper glume; palea of lower floret c. three-quarters as long as its lemma; fertile lemma acute to obtuse, slightly shorter than spikelet, hard, shining, dorsally rounded; palea subequal to lemma, flat. Flowers mostly Jan.–Mar.