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1 Glumes 5.7-9 mm long, much longer than the florets
....3 Glumes lanceolate to narrowly elliptic, not or only slightly exceeding the florets; lemmas 1.3-1.7 mm long; caryopses usually with a narrow, shallow ventral groove, smooth, the apices broadly obtuse to acute
....3 Glumes linear to narrowly lanceolate, exceeding the florets; lemmas 0.9-1.2 mm long; caryopses without a ventral groove, often somewhat coarsely rugose, the apices broadly obtuse
........5 Lemmas 2.4-3 mm long; anthers 0.6-0.8 mm long; spikelets 4-5 mm long
..........6 Leaf blades 4-7 mm wide; lemmas 1-2 mm long.
..........6 Leaf blades 8-16 mm wide; lemmas 2.1-2.4 mm long
......4 Panicles with 2-25 branches.