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Section Paludosae

See list of 7 species in this section

Reference: Reznicek and Catling (2002).

  • 1a. Perigynia glabrous; style persistent on the achene; leaf blades (2.6–) 5.5–21 mm wide
  • 1b. Perigynia pubescent; style articulated with the summit of the achene and deciduous from it at maturity; leaf blades 0.7–8.5 mm wide
    • 4a. Beak of perigynium with soft, hyaline, obscure teeth; staminate spikes 1 or rarely 2, borne on peduncles 2–20 mm long, usually exceeding the height of the lowest bract of the inflorescence
    • 4b. Beak of perigynium with distinct, firm teeth 0.2–0.8 mm long; staminate spikes 
1–3, borne on peduncles (8–) 20–90 mm long, usually equaled or overtopped by the 
lowest bract
      • 5a. Perigynia 4.5–6.5 mm long, the pubescence short and relatively sparse, not concealing the veins or cellular details of the perigynium body; plants of dry, sandy or rocky soil
      • 5b. Perigynia 2.4–5 (–5.2) mm long, the pubescence longer and dense, concealing the veins and cellular details of the perigynium body; plants of shorelines and wetlands
        • 6a. Leaf blades M-shaped in cross-section (at least when young), sometimes ± flat at maturity, (2–) 2.2–4.5 (–6) mm wide, not prolonged apically into an elongate, filiform tip, with a prominent midvein that forms a sharp, abaxial keel for much of the lengt
        • 6b. Leaf blades involute, 0.7–2 (–2.2) mm wide, prolonged at the apex into an elongate, sometimes curled, filiform tip, with a low, rounded midvein forming an inconspicuous abaxial keel

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