1 | Culms mat-forming; leaf margins smooth; panicle enclosed in the uppermost sheath, with 2-4 spikelets; spikelets 16-17 mm long |
1' | Culms erect to geniculate at base; leaf margins spinulose or scaberulose; panicle exserted with many spikelets; spikelets shorter than 7 mm long |
2 | Ligule setae 2-3 mm long; peduncle pilose below the panicle |
2' | Ligule setae 0.75 mm long; peduncle glabrous below the panicle |