Flora of North America species comparison

poorly developed.

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

erect, compressed, bases often swollen.

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

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

basal 2–4, cauline 1–3;

auricles 0.5–1 mm, apex rounded to nearly acute;

blade flat, 3–15 cm × 1–2.5 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.

glomerules, (1–)2–5(–10), each with (3–)6–15 flowers, open;

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.

tepals straw-colored with green midstripe, lanceolate or widely so, 3.5–5 mm, margins sometimes clear;

outer and inner series nearly equal;

stamens 3, filaments 1.5 mm, anthers 0.5 mm;

style 0.5 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, obovoid, 2.6–3.2 mm, shorter than perianth.

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

fusiform, 0.5–0.6 mm, not tailed.

obovoid, 0.5–0.6 mm, not tailed;

body clear yellow-brown.