Section Porocystis

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  C. pallescens

  1a. Uppermost spike unisexual, entirely staminate
• See list of 4 species in 1b
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  1b. Uppermost spike bisexual, gynecandrous
  • See list of 2 species in 2a
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    2a. Perigynia densely pilose; lateral spikes 2–4 mm wide; leaves with ligules longer than wide
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      C. swanii

      3a. Uppermost spike (5–) 11–20 mm long, densely flowered throughout; anthers 0.7–1.3 (–1.6) mm long
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      C. virescens

      3b. Uppermost spike 20–35 (–40) mm long, loosely flowered near base; anthers (1–) 1.6–2 (–2.8) mm long
  • See list of 2 species in 2b
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    2b. Perigynia glabrous or sparsely pilose; lateral spikes (3–) 4–11 mm wide; leaves with ligules shorter than wide to as long as wide (rarely longer than wide)
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      C. hirsutella

      4a. Carpellate scales awnless or sometimes with a minute mucro; perigynia glabrous, smooth, bluntly triangular in cross-section; anthers 1.3–2.2 mm long
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      C. bushii

      4b. Carpellate scales with an awn 0.5–2 mm long; perigynia sparsely pubescent, papillose, ± terete in cross-section; anthers 2–3 mm long

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 Show photos of:   Each photo represents one species in this section.