Flora of North America species comparison

tuberous, 3–4 mm diam.

1–many, occasionally becoming decumbent.

erect, terete, 2–3 mm diam., smooth.

0–2.

0(–1), straw-colored, apex acute.

basal and cauline;

auricles rudimentary or absent;

blade flat, 3–13 cm × 0.3–1.1 mm.

basal 1–2, cauline 2–4, auricles 0.5–3.5 mm, apex rounded, scarious;

blade green to straw-colored, terete, 3–50 cm × 1–2 mm diam.

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

primary bract shorter than inflorescence.

terminal panicles of 2–10(–20) heads or a single head, 1–4(–10) cm, branches ascending;

primary bract erect;

heads 30–100-flowered, spheric, 8–10 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 green to straw-colored, often red-tinted, lanceolate-subulate, apex acuminate;

outer tepals 2.5–3.8 mm;

inner tepals 2–3.2 mm;

stamens 3, anthers 1/4–1/2 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.

included, chestnut brown, 1-locular, obconic or ovoid, 1.8–2.7 mm, apex obtuse, valves separating at dehiscence, fertile throughout or only proximal to middle.

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

ellipsoid to oblique-oblong, 0.3–0.4 mm, not tailed;

cody clear to yellow-brown.

= 27–37, 58–81, 108–115.

= 44.