Flora of North America species comparison

3–4 diam., nodes not swollen, smooth. (often developing filiform leaves in running water).

1–many, occasionally becoming decumbent.

erect, terete to compressed, 5–12 mm diam.

0–2.

1–3, straw-colored to pink, apex acute.

basal and cauline;

auricles rudimentary or absent;

blade flat, 3–13 cm × 0.3–1.1 mm.

basal 0, cauline 2, long capillary leaves often found in fascicles on rhizomes;

auricles 0.3–0.5 mm, apex rounded, scarious;

blade terete, 50–70(–100) cm × 2–5 mm, those of proximal leaves usually overtopping inflorescences, distal leaves usually inflated bladeless sheaths, occasionally absent or withll well-developed blades.

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

primary bract shorter than inflorescence.

terminal panicles of 20–100 heads, 4–15 cm, branches erect to ascending;

primary bract erect;

heads (3–)5–13(–25)-flowered, hemispheric to turbinate, 6–8 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 straw-colored or reddish, lanceolate, 2.3–3.2(–4) mm, nearly equal, apex acuminate to awned;

stamens 6, anthers 1.5–2 times 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.

straw-colored, 1-locular, ovoid, 2.3–3.3 mm, equaling perianth, tapering to subulate tip, valves separating at dehiscence.

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

obovoid, 0.5–0.6 mm, not tailed;

body clear yellow-brown.

= 27–37, 58–81, 108–115.