Digitaria ischaemum

Tufted glabrous annual. Culms erect, to 40 cm high. Leaf-blades flat, 2–9 cm long, 2–5 mm wide; sheaths often purplish; ligules obtuse, 1–2 mm long. Panicle of 2–6 winged, one-sided, spike-like racemes, 2–8 cm long, digitately arranged, or with the lower slightly separated. Spikelets acute, 1.7–2.3 mm long, solitary, paired or in small clusters; lower glume lacking or vestigial, to 0.2 mm long; upper glume 3-nerved, equal to or slightly shorter than the spikelet, sparsely to densely covered with fine, club-tipped hairs; lower lemma 5–7-nerved, as long as the spikelet, with hairs like the upper glume; palea of lower floret absent; lemma of upper (bisexual) floret acute, equal to or slightly shorter than spikelet, dorsally rounded, finely striate, brown at maturity. Flowers Feb.–Jul.