Flora of North America species comparison

2–3 mm diam.

1–many, occasionally becoming decumbent.

erect, 2–6 mm diam.

0–2.

0 or 1–2, straw-colored, apex narrowly acute.

basal and cauline;

auricles rudimentary or absent;

blade flat, 3–13 cm × 0.3–1.1 mm.

basal 1–3, cauline 2–6, straw-colored;

auricles absent;

blade 2–25 cdm x 1.5–6 mm.

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

primary bract shorter than inflorescence.

panicles or racemes of 2–50 heads or heads solitary, 2–14 cm, erect or ascending branches;

primary bract erect;

heads 3–70-flowered, obovoid to globose, 7–11 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 green to brown or reddish brown, lanceolate;

outer tepals 2.7–3.6(–4) mm, apex acuminate;

inner tepals 2.2–3(–3.5) mm, nearly equal, apex acuminate;

stamens 3 or 6;

anthers ½1/2 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.

included to slightly exserted, chestnut to dark brown, 1-locular, oblong, 2.4–4.3 mm, apex obtuse proximal to beak.

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

elliptic to obovate, 0.4–1 mm, occasionally tailed.

= 27–37, 58–81, 108–115.