Flora of North America species comparison

densely branching.

1–2 mm diam., not swollen.

few–20.

erect, terete, 1–3 mm diam., smooth.

0–1, straw-colored to chestnut brown, apex acute.

basal, (1–)2–3;

auricles 2–5 mm, apex acute, membranous;

blade flat, 3–12 cm × 0.5–1 mm, margins entire.

basal 1–2, cauline 0–1;

auricles 1–1.2 mm, apex rounded to acute, membranaceous or scarious;

blade green to straw-colored, terete, 3–15 cm × 0.3–0.6 mm.

5–40-flowered, borne congested or branch internodes ca. as long as tepals, ssomewhat loose, 1–5 cm;

primary bract usually longer than inflorescence.

terminal single head (rarely cluster of 2 heads), 0.5–1.6 cm;

primary bract erect;

heads 12–60-flowered, spheric (to hemispheric), 4.5–15 mm diam.

bracteoles 2;

tepals greenish, lanceolate, 3.3–4.4 mm;

outer and inner series nearly equal;

stamens 6, filaments 0.5–0.9 mm, anthers 0.1–0.2 mm;

style 0.1–0.2 mm.

tepals dark purplish brown to black, lanceolate to lance-ovate, apex acute, mucro subulate;

outer tepals 2.4–4.9 mm;

inner tepals 2.3–4.3 mm;

stamens 6, anthers 1/4 to equal filament length.

tan or light brown, 1-locular to pseudo-3-locular, ellipsoid, (3.3–)3.8–4.7 × (1.1–)1.3–1.7 mm, nearly equal to tepals.

included or slightly exserted, chestnut brown, 1-locular, obovoid, 1.9–3.5 mm, apex obtuse or rounded, valves separating at dehiscence, fertile throughout or only proximal to middle.

tan, ellipsoid to lunate, (0.52–)5.5–0.65(–0.7) mm, not tailed.

ellipsoid, 0.4–0.5 mm, not tailed;

body clear yellow-brown.

= 80.

= 40.