Flora of North America species comparison

2–4 mm diam., not swollen.

short, knotty.

erect, terete, 1–3 mm diam., smooth.

compressed.

0–1, straw-colored or maroon, apex acute.

basal 0–2, cauline 1–2(–5);

auricles 0.5–1.2 mm, apex rounded, scarious;

blade green to straw-colored, terete, 1.5–12 cm × 0.5–1.1 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.

terminal panicles of 5–25 heads, 3–11 cm, branches erect to ascending;

primary bract erect;

heads 2–10-flowered, obpyramidal, usually with some flowers short- pedicellateled, 2–6 mm in diam.

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

primary bract shorter than inflorescence.

tepals greenish to straw-colored, lanceolate to oblong;

outer tepals 1.8–3 mm, apex obtuse, mucronate;

inner tepals 1.6–2.7 mm, apex obtuse;

stamens 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.

equaling perianth to usually exserted, chestnut brown to straw-colored, imperfectly 3-locular, oblong to oblong-ovoid, 2.3–3.5 mm, apex obtuse, 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.

oblong to ovoid, 0.5–0.7 mm, not tailed.

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

= 40.

= 38, 40.