Flora of North America species comparison

lax, erect to excurved, leafy toward base, filiform.

erect to spreading, leafybased;

scapes nearly filiform, nearly trigonous, few ribbed.

overtopped by scape;

blades filiform, distally flattened, channeled, tapering, to 1 mm wide, margins strongly involute, apex blunt.

spreading to erect, exceeded by scape;

blades filiform to linear, proximally flat or involute, becoming involute, 0.4–2 mm wide, apex tapering, trigonous.

spikelet clusters 1–3, laterals widely spaced, all narrowly turbinate, ellipsoid, or ovoid; leafy bracts setaceous, overtopping proximal clusters, often overtopped by terminal ones.

terminal, solitary, headlike, dense, white, leafyinvolucrate, 0.5–1 cm wide;

involucral bracts 3–6, spreading to recurved, whitebased, greentipped, narrowly linear, longest bract elongatesubulate, 4–8 cm × 2–5 mm.

erect or ascending, redbrown, lanciform, mostly 4.5–5 mm, apex acute;

fertile scales lanceolate, (3–)4–4.5 mm, apex acute, apiculate.

white, ovoid, 4–6 mm;

scales several, boatshaped, basal ones with ciliolate keel, fertile ones 3–3.8 mm.

perianth absent.

perianth absent.

2–3(–5) per spikelet;

stipe and receptacle 0.1–0.2(–0.3) mm, setose;

body brown with pale glassy center, narrowly obovoidellipsoid, lenticular, 1.2–1.5 mm, margins narrow, flowing to tubercle;

surfaces very finely lined longitudinally, transversely with wavy lines of tiny pits;

tubercle narrowly triangular or slightly concavesided, flattened, 0.7–1.2(–1.5) mm.

1–1.2 mm;

body yellow to black, nearly orbicular, tumidly lenticular, 0.8–1 × 0.6–0.7(–1) mm;

surface lattices shortlinear, vertical in fine undulating rows, with ends raised to rounded, transverse rugulosities;

tubercle lowtriangular, lunate, 0.2–0.3 mm, apex acute, blunt or apiculate.