Flora of North America species comparison

short, knotty.

to 5.

compressed.

to 1.8 cm, 1/2–1 1/3 height of plant.

basal and cauline;

auricles 0.5–1.5 mm, apex rounded, membranous;

basal blade flat, 20–4.5 dcm × 1.5–5 mm, cauline reduced.

solitary flowers.

glomerules, (2–)5–200, each with (1–)2–10(–20) flowers, mostly open, 3–10(–15) cm;

primary bract shorter than inflorescence.

2-merous;

: tepals 4(–6), erect to recurved at maturity, reddish, 1.5–3 × 0.5–1.2 mm;

outer and outer series nearly equal, apex rounded to acute;

stamens 2(–3), filaments 0.5–1.4 mm, anthers 0.3–0.7 mm;

style 0.1–0.4 mm, stigma 2(–3), 0.3–1 mm.

tepals dark brownish, usually with green midstripe, outer series ovate-lanceolate, 1.8–3.2 mm, margins broad, clear, awned or not, apex acutish;

inner series ovate to lanceolate, 2–3.5 mm, slightly longer than outer series, apex obtuse to acute, awned or not;

stamens 3, opposite outer tepals, shorter to longer than tepals, filaments 1.1–2.5 mm, anthers 0.3–1.2 mm;

style 0.3 mm.

reddish, 2–- or 3-locular, obovoid to ellipsoid or oblate, 1.9–3.5 × 1–2 mm.

brown and sometimes dark spotted, 3-locular, obovoid to nearly globose, 1.8–2.9 mm, shorter to longer than perianth.

ovoid to oblate, 0.3–0.55 mm.

yellow to light brown, fusiform, 0.4–0.7 mm, not tailed.

= 38, 40.