Flora of North America species comparison

2–3 mm diam., not swollen.

densely branching.

erect to decumbent (and floating), terete, 1–3 mm diam., smooth.

1–10.

1, maroon to straw-colored, apex acute to obtuse.

1–3.

basal 0–2, cauline (1–)3–6;

auricles 0.5–1 mm, apex rounded, scarious;

blade green to straw-colored, terete, 3.5–12 cm × 0.5–1.1 mm.

basal, 1–2(–3);

auricles whitish or purplish tinged, 0.2–0.4(–0.6) mm, scarious;

blade flat, 5–15 cm × 0.5–1.1 mm, margins entire.

terminal panicles of 3–30(–50) heads, 3.5–8 cm, branches spreading;

primary bract erect;

heads 3–10-flowered, obpyramidal to hemispheric, 6–8 mm diam.

usually somewhat compact, 1.5–7 cm;

primary bract usually shorter than inflorescence.

tepals green to straw-colored or dark brown, ovate to lanceolate, 1.8–3 mm;

outer tepals with apex acute or acuminate;

inner tepals with apex acute acuminate to obtuse;

stamens 6, anthers equal to filament length.

bracteoles 2;

tepals greenish, lanceolate, 3.3–4.4 mm, apex acuminate;

stamens 6, filaments 0.5–0.9 mm, anthers 0.4–0.6 mm;

style 0.1–0.2 mm.

exserted ca. 1 mm beyond perianth, chestnut brown to dark brown, imperfectly 3-locular, ellipsoid or ovoid, 2.8–4 mm, apex acute proximal to beak, valves separating at dehiscence.

light tan or darker, 1-locular to pseudo-3-locular, ellipsoid to nearly globose, (3.3–)3.8–4.7 mm, nearly equal to or longer than tepals.

obovoid, 0.5 mm, not tailed.

tan, ellipsoid to lunate, 0.436–0.73 mm, not tailed.

= 80.

= 80.