Click the number at the start of a key lead to highlight both that lead and its corresponding lead. Click again to show only the two highlighted leads. Click a third time to return to the full key with the selected leads still highlighted.
| 1 Spikelets 4-6 mm long |
| 1 Spikelets 1.5-2.8 mm long. |
| ..2 Spikelets 1.5-2.2 (-2.8) mm long; leaf blades mostly 2-4 (-6) mm wide |