Flora of North America species comparison

2–3 mm diam., not swollen.

poorly developed.

erect, terete, 2–4 mm diam., smooth or rugulose.

erect, compressed, bases often swollen.

1–2, pink to straw-colored, apex acute.

basal 1–2, cauline 1–2;

auricles 1–4.9 mm, , apex rounded, membranaceous;

blade green to straw-colored, terete, 20–30 cm × 1.5–4 mm, rugulose or smooth.

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.

terminal panicles of 25–66 heads, 7–13 cm, branches spreading;

primary bract erect;

heads 6–10-flowered, hemispheric to obovoid, 5–10 mm diam.

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

primary bract shorter than inflorescence.

tepals straw-colored to brown, lanceolate, apex acuminate;

outer tepals (2–)2.5–3.4 mm;

inner tepals (2–)2.6–3.6 mm;

stamens 6, anthers 1.5–2 times filament length.

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.

exserted, chestnut brown, 1-locular, subuloidsubulate, (2.4–)3–3.9 mm, apex tapering to subulate tip, valves separating at dehiscence.

tan to reddish brown, 3-locular, obovoid, 2.6–3.2 mm, shorter than perianth.

obovoid, 0.3–0.4 mm, not tailed.

fusiform, 0.5–0.6 mm, not tailed.

= 40.