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 Carex, [26ff] Section 23a Hymenochlaenae: section Hymenochlaenae (the "Longirostres" group)
| 1 Perigynia several-nerved, the beak much shorter than the body; basal sheath not conspicuously fibrous |
| 1 Perigynia 2-ribbed (otherwise nearly nerveless), the beak about as long as the body; basal sheath conspicuously fibrous |