Flora of North America species comparison

1–many, occasionally becoming decumbent.

to 20.

0–2.

basal and cauline;

auricles rudimentary or absent;

blade flat, 3–13 cm × 0.3–1.1 mm.

to 2.2 cm.

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

primary bract shorter than inflorescence.

headlike clusters, each with 1–2 flowers;

bracts subtending inflorescence 2–4, ovate, inconspicuous, 0.8–1.5 mm, membranous, apex acute.

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 4–6, chestnut brown to black, 1.8–2.8 × 0.8–1.5 mm;

inner series usually slightly longer than outer, apex acuminate to attenuate;

stamens 2–3, filaments 0.6–1.1 mm, anthers 0.3–0.4 mm;

style 0.1–0.3 mm, stigma 0.4–0.6 mm.

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.

tan or apex reddish, 2– or 3-locular, globose to obovoid, 1.2–2 × 1.1–1.5 mm, usually shorter than tepals.

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

ellipsoid-ovoid, 0.5–0.8 mm.

= 18.

= 27–37, 58–81, 108–115.