Flora of North America species comparison

erect or ascending, leafy, nearly terete or obscurely angular, many-ribbed, stiff.

erect or excurved, linear, leafy, trigonous, slender.

exceeding or exceeded by inflorescences;

blades linear, proximally flat, 1–5 mm wide, apex trigonous, tapering.

slightly to much exceeded by culm;

blades ascending, narrowly linear, proximally flat, 1–3 mm wide, apex trigonous, tapering gradually, setaceous.

terminal and axillary, clusters of corymbs 1–5, diffuse, branches ascending to divaricate; leafy bracts much exceeding axillary corymbs.

terminal;

spikelet single, terminal cluster of spikelets crowded, hemispheric, 2.5 cm wide; leafy bracts linearsetaceous, much exceeding cluster.

redbrown to dark brown, ovoidlanceoloid, 3–6(–7) mm, apex acute;

fertile scales several, narrowly ovate, 2.5–3.5 mm, apex narrowly acute;

midrib included or shortexcurrent.

whitish to tan, narrowly lanceoloid, (3.5–)4–5.5 mm, apex acuminate;

fertile scales lanceolate, 3.5–4(–4.5) mm, apex narrowly acute, minutely awned or apiculate.

perianth absent.

bristles vestigial or obsolete.

1.3–1.5 mm;

body brown to blackish, tumidly lenticular, nearly orbicular, 0.6–1 × 0.6–1 mm, margins distinct, narrow, flowing into base of tubercle;

tubercle flat, narrowly triangular, at least 0.5 mm high, base broadly 2-lobed, apex acuminate.

1 per spikelet, (1.9–)2–2.3 mm;

body brown with pale center, lenticular, broadly ellipsoid, 1.5–2 × 1.5 mm, margins flowing to tubercle;

surfaces longitudinally finely striate;

tubercle depressedtriangular, 0.2–0.3(–0.4) mm.