Flora of North America species comparison

short, knotty.

erect, 1–4 mm diam., smooth.

compressed.

1–2, straw-colored to pink, apex acute.

basal 1–3, cauline 1–2;

auricles 0.6–1.5 mm, apex rounded, scarious;

blade terete to compressed, 0.2–12 cm × 0.5–2 mm.

basal and cauline;

auricles 0.5–1.5 mm, apex rounded, membranous;

basal blade flat, 20–4.5 dcm × 1.5–5 mm, cauline reduced.

panicles of 5–80 heads, 5–25 cm, branches ascending;

primary bract erect;

heads 2–6-flowered, ellipsoid to obovoid, 2–5 mm diam.

glomerules, (2–)5–200, each with (1–)2–10(–20) flowers, mostly open, 3–10(–15) cm;

primary bract shorter than inflorescence.

tepals green to light brown, lanceolate;

outer tepals 1.8–2.5 mm, apex obtuse to nearly acute;

inner tepals 2–2.8 mm, apex obtuse to nearly acute;

stamens 3 or 6, anthers 1/2 filament length.

tepals dark brownish, usually with green midstripe, outer series ovate-lanceolate, 1.8–3.2 mm, margins broad, clear, awned or not, apex acutish;

inner series ovate to lanceolate, 2–3.5 mm, slightly longer than outer series, apex obtuse to acute, awned or not;

stamens 3, opposite outer tepals, shorter to longer than tepals, filaments 1.1–2.5 mm, anthers 0.3–1.2 mm;

style 0.3 mm.

exserted, chestnut to dark brown, imperfectly 3-locular, obconic, 2.4–3.8 mm, apex acute proximal to beak, valves separating at dehiscence.

brown and sometimes dark spotted, 3-locular, obovoid to nearly globose, 1.8–2.9 mm, shorter to longer than perianth.

ellipsoid to fusiform, 0.8–1.2 mm, tailed;

body covered with whitish translucent veil.

yellow to light brown, fusiform, 0.4–0.7 mm, not tailed.

= 80.

= 38, 40.