Flora of North America species comparison

3–7 mm diam., nodes not swollen.

1–many, occasionally becoming decumbent.

erect, terete, 2–4 mm diam.

0–2.

2–3, straw-colored, apex rounded.

basal and cauline;

auricles rudimentary or absent;

blade flat, 3–13 cm × 0.3–1.1 mm.

basal 0, cauline 1;

auricles 0.5–1.5 mm, apex blunt, cartilaginous;

blade 25–35 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 24–60 heads, 5–10 cm, branches spreading;

primary bract erect;

heads 15–50-flowered, spheric, 4.5–6 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 light brown, lanceolate to oblong, 2–2.5 mm, nearly equal;

stamens 6, anthers longer than filament.

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.

included with beak slightly exserted, chestnut brown, 3-locular, ovoid, 2.5 mm, apex acute proximal to beak, valves separating at dehiscence, fertile throughout or only proximal to middle.

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

not seen.

= 27–37, 58–81, 108–115.