Flora of North America species comparison

erect or arching, leafy toward base, filiform, terete, wiry.

arching or erect, leafy-based, distally wandlike, terete, multiribbed.

overtopped by culm;

blades linear to filiform, channeled, 0.3–0.5 mm wide, margins deeply involute, apex setaceous.

ascending to spreading, overtopped by scape;

blades linear, proximally flat, 2.5–5 mm wide, apex subulate, trigonous.

spikelet clusters 1–2(–3), dense to open, narrowly to broadly turbinate;

branches capillary, variously elongate; leafy bracts setaceous, equaling or exceeding clusters.

terminal, headlike clusters of spikelets, clusters dense, leafy-involucrate;

involucral bracts several, spreading to downcurved, longest 6–13 cm × 5–10 mm, mostly white to midbract, then green, abruptly narrowly linear.

variously brown, ellipsoid, 2–3 mm, apex sharply acute;

fertile scales ovate to nearly orbiculate, rounded, 1.2–1.8 mm, apiculate, convexcupulate, midrib slender, mostly included.

white, ovoid, 5–7 mm;

fertile scales boatshaped, sharply curved-keeled, 5 mm, apex acute.

perianth absent.

perianth absent.

2–3 per spikelet, 0.7–0.9(–1) mm;

body pale, obovoid-lenticular, (0.5–)0.6–0.9 × 0.4–0.5 mm, margin wirelike;

surfaces transversely rugulose;

tubercle buttonlike, depressed triangular, 0.05–0.1 mm, base lunate atop rounded fruit body.

several per spikelet, 1.5–2 mm;

body yellowish to deep brown, tumidly lenticular, broadly obovoid to orbicular or oblate, 1.5 mm, widest at or toward midbody, margins flowing to tubercle;

surfaces with many fine rows of vertical shallow lattices, their contiguous ends making transverse rows of papillae;

tubercle crescent-based, depressed-triangular, 0.5 mm, apex acute.

= 12.