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Section Paniceae
See list of 6 species in this sectionReference: Rothrock and Reznicek (2002).
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1a. Perigynium beakless or with a beak shorter than 0.5 mm
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2a. Leaves coriaceous, involute, heavily glaucous; perigynia appressed-ascending, tapering to a beakless or short, straight-beaked apex
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2b. Leaves herbaceous, flat, folded, or M-shaped in cross-section (at least when young), sometimes ± flat at maturity, not or only slightly glaucous; perigynia ascending to spreading, concavely tapering (at least on one surface) to a short, curved beak
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3a. Reproductive stems smooth along the angles; lowermost bract of inflorescence short, the blade and sheath mostly 28–58% of the total inflorescence height
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3b. Reproductive stems scabrous along the angles (at least near the summit); lowermost bract of inflorescence relatively elongate, the blade and sheath mostly 62–111% of the total inflorescence height
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4a. Achenes 1.2–1.6 (–1.8) mm wide; ligules of leaves (0.6–) 1–6 mm long, (0.8–) 1–2 times as long as wide; leaf blades green; carpellate spikes 3–5.8 mm thick
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4b. Achenes 1.7–2.2 (–2.5) mm wide; ligule of leaves 0.4–3.6 mm long, 0.4–1.2 times as long as wide; leaf blades gray-green; carpellate spikes 3.5–8 mm thick
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1b. Perigynium tapering to a distinct beak 0.6–1.8 mm long
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5a. Lower sheaths of reproductive stems pale brown; perigynia and abaxial leaf blade surface not, or only sparsely, minutely papillose; lower perigynia of each spike loosely arranged; plants of forested wetlands
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5b. Lower sheaths of reproductive stems strongly tinged with anthocyanin; perigynia and abaxial leaf blade surface minutely papillose; lower perigynia of each spike densely arranged; plants of well-drained, sandy soils
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Each photo represents one species in this section.