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Support the Flora of the Southeastern US

2024 has been a banner year for making the best flora we can imagine. We've created:
With financial support from people like you, we are aiming even higher in 2025. Together we can accomplish all this: Vote on our 2025 priorities
  • Add Global Conservation Ranks (GRanks) vote
  • Professional graphic keys (polyclaves) to individual families/genera vote
  • 2 new FloraQuest apps: Florida & Mid-South vote
  • Image overlays highlighting diagnostic characters with arrows vote
  • iNaturalist integration in FloraQuest vote
Write-in vote: vote
We've set a goal of recruiting 200 ongoing supporters to donate $15 or more each month in 2025. Please help us reach this goal and make next year's flora even better:
X
Keyed in multiple places:

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, Key B: Subkey in Carex

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1 Widest leaves 4-8 mm wide; inflorescences more-or-less capitate (occasionally with the lowermost 1 or 2 spikes separated
1 Widest leaves 1-4 mm wide; inflorescences ovoid to cylindric

Key to Carex, Key E: Subkey in Carex

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1 Apex of perigynium beak with 2 teeth at least (0.4-) 0.5 mm long.
  2 Perigynia with 5+ distinct veins; at least proximal leaves septate-nodulose, rarely not.
    3 Perigynia with serrulate wing on margins; spikes usually 20+, sessile, pistillate or androgynous and similar in appearance, forming a dense, ovoid or oblong head, rarely with proximal spike separated
    3 Perigynia without wing on margins; spikes not more than 10, usually at least proximal shortly pedunculate, sometimes subsessile, distal and proximal spikes usually dissimilar in appearance, usually not crowded into a dense head.
      4 Pistillate scales obtuse to acuminate, awnless or at most with a rough apiculus.
        5 Staminate spikes usually 1-3+; perigynia 6-15 (-22)-veined, each 4-10 (-12.5) mm.
      4 Pistillate scales, at least some, with a scabrous awn.
                   10 Upper pistillate scales acute to short-awned, awn < ½ as long as the body.
                          13 Perigynium veined to tip of body and often into beak; widest leaves mostly > 4 mm wide.
1 Apex of perigynium beak entire, emarginate, or with 2 teeth < 0.5 mm long.
                                       19 Roots brown or black, without yellow-brown felty covering, rarely with white felty covering.
                                                      26 Adaxial side of leaves with 2 marginal veins more prominent than midvein; young leaves M-shaped in cross section.
                                                      26 Adaxial side of leaves without 2 marginal veins more prominent than midvein; young leaves V-shaped or rounded in cross section.