Flora of North America species comparison

erect and ascending, sparsely branched or simple, obtusely angled, 1.5–10(–15) dm, stout, scurfy when young.

slender to stout, mainly 1–5(–7) dm, branching almost throughout;

herbage pubescent with scurfy and arachnoid hairs.

sessile or short petiolate;

blade white abaxially, green adaxially, linear to lanceolate, elliptic, or oblong, 15–75 × (1–)3–25 mm, thin, base cuneate to long attenuate, margin coarsely sinuate-dentate or entire, apex rounded to acute, mucronate, densely scurfy and pale abaxially, green and glabrous adaxially.

alternate, proximalmost on petioles (3–)5–30 mm, becoming subsessile or short petiolate distally;

blade 3-veined, ovate to rhombic or orbiculate to elliptic, 0.4–5 × 0.2–3 cm, base rounded to cuneate, margin entire, apex acute to obtuse.

in glomerules, forming slender, usually dense, naked terminal narrowly paniculate spikes, panicles 6–30 cm;

glomerules beadlike, small, 2–3 mm thick;

calyx 5-cleft.

with calyx 4–5-lobed.

in few-flowered axillary clusters.

pale brown, 1 mm.

greenish, yellowish, or brown, 0.9–2 mm;

radicle superior.

bracteoles short stipitate, cuneate-orbiculate or broadly cuneate, compressed, 2–2.5 mm, united basally, apex rounded, acutely 5-dentate, faces 3-veined, usually unappendaged, rarely obscurely tuberculate.

bracteoles sessile, ovate to oblong or broadly cuneate or pan-duriform, 1.5–5.5 × 1.5–5 mm, thick, united to apex, apex truncate to cuspidate or tridentate, surfaces with thickened processes or rarely smooth.

= 18.