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.

Key to Torreyochloa

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1 Leaf blades 1-3.5 mm wide; ligules 2.5-6.5 mm long; anthers 0.2-0.5 (-0.6) mm long; larger lemmas 2.1-2.5 mm long
1 Leaf blades (4-) 5-10 mm wide; ligules 5-9 mm long; anthers (0.8-) 1.1-1.5 (-1.7) mm long; larger lemmas 2.7-3.5 mm long