Flora of North America species comparison

spreading to erect, leafy, obtusely triangular.

erect or excurved, lax, leafy, slender to wiry.

often exceeding inflorescences;

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

overtopped by culm;

basal leaves spreading, twisted, distal longer, erect or ascending;

blades proximally flat, 1–3 mm wide, apex trigonous, subulate, tapering.

terminal and axillary, clusters of 1–5 corymbs; leafy bracts much exceeding corymbs.

spikelet clusters 1–4, proximalmost widely spaced, spikelets elongate, open, turbinate or compactlobed hemispheric;

branches erect to ascending; leafy bracts setaceous, exceeding proximal clusters, exceeded by distal clusters.

few to several, on ascending, stiff, short-to-elongate branches, red-brown to brown, lanceoloid, (5–)6–10 mm, apex acuminate;

fertile scales many, ovate, shallowly convex, 5 mm, apex acuminate;

midrib short-excurrent or not.

mostly dark brown to brown, globose to broadly ovoid, (2–)2.5–3(–4) mm, apex acute;

fertile scales broadly ovate to orbiculate, 1.7–2.3 mm, apex obtuse to rounded or emarginate, midrib mostly included, sometimes excurrent as apiculus.

perianth absent.

perianth bristles 6 or less, antrorsely barbellate, of various lengths.

1.5 mm;

body dark brown to black, tumidly lenticular, nearly orbicular, 0.8–0.9 × 0.6–0.7 mm, margins grooved, discontinuous with tubercle;

surfaces transversely wavyrugose, ridges of contiguous rows of vertical, linear, raised cells;

tubercle broad, low triangular, 0.2–0.3 mm, crustaceous, base capping fruit summit, raised at ends, apex shortacuminate.

1–3 per spikelet, 1.5–1–8 mm (–2 mm in var. pinetorum);

body tumidly biconvex;

surfaces transversely wavyrugose, intervals of vertically rectangular alveolae or transverserugosity indistinct, surface isodiametrically alveolate or cancellate;

tubercle shortconic to patelliformapiculate.