Flora of North America species comparison

often with terminal tubers.

1–many, occasionally becoming decumbent.

erect, terete, 1–3 mm diam., smooth.

0–2.

1, maroon to brown, apex acute.

basal and cauline;

auricles rudimentary or absent;

blade flat, 3–13 cm × 0.3–1.1 mm.

basal 1–3, cauline 1–2;

auricles 0.5–2 mm, apex rounded, scarious;

blade green or maroon, compressed, 2–16 cm × 1–2 mm.

loose and diffuse or less often compact, usually at least ½1/2 total height of plant;

primary bract shorter than inflorescence.

terminal panicles of 40–100(–200) heads, 4–16 cm, branches ascending to spreading;

primary bract erect to ascending;

heads 2–10-flowered, hemispheric to obpyramidal, 0.3–0.5 mm diam.

bracteoles 2;

tepals greenish, lanceolate, 3.8–7(–8.5) mm;

inner series slightly shorter, apex sometimes obtuse;

stamens 3–6, filaments (0.7–)1–1.8 mm, anthers 0.3–0.8 mm;

style 0.1–0.2 mm.

tepals straw-colored, lanceolate, apex acuminate;

outer tepals (2.2–)2.6–2.9 mm;

inner tepals (1.8–)2.4–2.8;

stamens 3, anthers 2/3 to equal filament length.

tan to reddish brown, 3-locular, ellipsoid to narrowly so, slightly truncate, 2.7–4 × 1–1.5 mm, sometimes exceeding inner tepals but usually not outer series.

exserted, chestnut brown, 1-locular, narrowly obpyriform to narrowly ovoid, 2.4–2.9 mm, apex acute, valves separating at dehiscence.

yellowish, widely ellipsoid to ovoid, 0.26–0.49, not tailed.

ellipsoid, 0.3–0.5 mm, not tailed;

body clearly yellow-brown.

= 27–37, 58–81, 108–115.

= 40.