1 | Inflorescence an elongate, narrow, oblanceolate, spike-like panicle |
1' | Inflorescence an ellipsoid panicle or capitulum of spikes |
2 | Inflorescence longer than broad |
2' | Inflorescence broader than long |
3 | Glumes without cuspidate acumen; lemmas 3.0-3.6 mm long, acute, unawned |
3' | Glumes narrowing into a cuspidate acumen; lemmas 2.5-3.0 mm long, ending into a cuspidate acumen of 0.5-0.8 mm |
4 | Spikelets 4-6 x 1 mm; stamens 3 |
4' | Spikelets 3.0-3.5 x 1.0-1.5 mm; stamens 2 |