| 1 | Glumes whitish, 2-3 mm long, excurrent into a scabrid awn. Utricles greenish becoming light brown, subabruptly beaked, several-nerved, usually more or less pubescent or hispidulous, 2½-3½ mm long |
| 1' | Glumes brownish with white hyaline margin, acute or obtuse, muticous or with a small mucro. Utricles stramineous to fulvous, gradually beaked, nerveless or faintly nerved, hispidulous to glabrous, 2½-4 mm. |
| 2 | Utricles usually hispidulous, at least above on the margins, 2½-3 mm. |
| 2' | Utricles glabrous, rarely obscurely hispidulous on the margins above, 3.5-4 mm long |
