Flora of North America species comparison

thickened.

cespitose, 9–35 cm.

cespitose, 10–40 cm.

absent.

basal leaves 6–11.5 cm × 1.5–4 mm, apex not callous, sparingly ciliate.

sheath throats with long, soft, wavy hairs;

basal leaves 5–15 cm × 3–7 mm, margins with long, soft, wavy hairs, apex callous.

umbellate-paniculate;

glomerules 4–30 (each with 9–24 flowers), central glomerules sessile or nearly sessile, cylindric, 6–10 × 4 mm;

branches straight, erect, to 3 cm;

proximal inflorescence bract conspicuous, leaflike, equal to much longer than inflorescence;

bracts clear, sometimes variegated with purple;

bracteole margins dentate to lacerate.

umbellate or sessile glomerules, 5–15 × 5–7 mm;

glomerules 1–6, spheric to nearly cylindric;

branches straight, divergent by as much as 90°, 0.5–5 cm;

proximal inflorescence bract conspicuous, shorter than to much longer than inflorescence;

bracts clear, margins nearly entire to lacerate;

bracteoles clear, margins ciliate, especially in distal half.

tepals clear to straw-colored throughout or centers brown with clear margins and apex, 1.5–2.6 mm;

outer whorl exceeding inner whorl, (outer whorl apex awned);

anthers equaling to 1.5 times filament length.

tepals dark brown to pale with clear margins, 2–5 mm;

outer whorl often longer than inner whorl;

anthers much exceeding to shorter than filaments.

light or dark reddish, shining, spheric, usually equaling inner tepal whorl.

greenish to dark brown, spheric, equal to or much shorter than tepals.

translucent brown, ellipsoid, 0.7–1 mm;

caruncle 0.2–0.3 mm.

red-brown to brown, cylindric, 1–1.5 mm;

caruncle 0.3–0.8 mm.

= 12.

= 12, 24.