Flora of North America species comparison

short.

cespitose, 15–30(–35) cm.

cespitose, 10–40 cm.

absent.

sheath throat acutely angled, pilose;

basal leaf blade 5–10 cm × 3–8 mm, apex short acuminate, mostly glabrous;

cauline leaves (1–)2–4, 3–5 cm × 2–4 mm.

sheath throats with long, soft, wavy hairs;

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

anthelate, few flowered;

main branches generally 2–4, spreading less than 90°, lax, usually arching;

proximal inflorescence bract 1 cm or less;

bracts and bracteoles brown;

margins with long curly cilia.

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.

solitary on short pedicels;

tepals dark purplish brown (margins finely lacerate toward apex), 2–2.5 mm, margins finely lacerate toward apex, apex acute, not reflexed;

anthers ± equaling filament length;

stigmas 2 times style 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.

dark brown, less than 2.5 mm, slightly longer than tepals;

beak absent.

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

dark reddish brown, cylindric, 1.2–1.6 mm;

caruncle essentially absent.

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

caruncle 0.3–0.8 mm.

= 24.

= 12, 24.