Flora of North America species comparison

3–4 diam.

1–many, occasionally becoming decumbent.

erect, terete, 3–4 mm diam., smooth.

0–2.

1–2, purple, apex acute.

basal and cauline;

auricles rudimentary or absent;

blade flat, 3–13 cm × 0.3–1.1 mm.

basal 0–1, cauline 2–3;

auricles 0.5–2 mm, apex acute, membranaceous;

blade terete, 0–24 cm × 0.5–1.7 mm, most distal cauline leaf blade 0–2 cm, shorter than sheath.

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

primary bract shorter than inflorescence.

panicles of (1–)3–21 heads, 1–8 cm, branches erect to spreading;

primary bract erect;

heads 40–60-flowered, spheric, 8–12 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 to reddish brown, lanceolate-subulate;

outer tepals 2.9–4.1 mm, apex acuminate;

inner tepals 2.2–3.7 mm, apex acuminate;

stamens 3, anthers 1/4–1/2 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, , straw-colorerd, 1-locular, subulate, 2.5–4.2 mm, apex tapering to subulate beak, valves not separat ing at dehiscence, fertile throughout or only proximal to middle.

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

ellipsoid to ovoid, 0.4 mm, not tailed;

body clear yellow-brown.

= 27–37, 58–81, 108–115.