Flora of North America species comparison

long creeping.

1–many, occasionally becoming decumbent.

erect, slightly compressed, never rooting at nodes.

0–2.

basal and cauline;

auricles rudimentary or absent;

blade flat, 3–13 cm × 0.3–1.1 mm.

basal several, cauline 1–3;

auricles absent, or essentially so;

blade flat, 0.5–3 dm × 1.5–4 mm.

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

primary bract shorter than inflorescence.

glomerules 1–5, each with (8–)10–30 flowers, congested to open, 2–6 cm;

primary bract shorter than inflorescence.

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 dark brown with green midstripe, lanceolate, 4–6 mm, margins scarious, occasionally papillose;

inner series slightly shorter;

stamens 6, filaments 1–1.3 mm, anthers 1–1.5 mm;

style 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 darker, 3-locular, obovoid, 3–5 mm, shorter than perianth.

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

ovoid, body 0.6–0.8 mm, tails 0.2–0.4 mm.

= 27–37, 58–81, 108–115.