| 1. Inflorescence branches 2, generally 12 cm |
| C. transvaalensis |
| 1' Inflorescence branches 320, generally 38 cm |
| |
| 2. Rhizomes present; glumes lanceolate, 1/41/2 × spikelet length; palea keels glabrous |
| C. dactylon |
| 2' Rhizomes 0: glumes deltate, generally < 1/51/4 × spikelet length; palea keels hairy |
| C. plectostachyus
|