Flora of North America species comparison

densely branching.

1.5–3.5 mm diam.

few–20.

erect, 1.5–3 mm diam.

2, 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 2, cauline 1–2, light green;

auricles absent;

blade 2.5–20.5 cm × 2–3 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.

panicles of 10–50 heads, 4–10 cm, ascending to erect branches;

primary bract erect;

heads 3–22-flowered, obovoid to hemispheric, 5–11 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 brown to purplish brown, lanceolate, 3–4 mm, nearly equal;

outer tepals acuminate, mucro subulate;

inner tepals acuminate or cuspidate, mucro subulate;

stamens 6, anthers 2.5–3 times 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, chestnut brown, 1-locular, oblong, 2.3–3.2 xx–xx mm (including beak), apex acuminate proximal to beak, beak slightly exserted.

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

obovoid, 0.5–0.6 mm, not tailed.

= 80.