Flora of North America species comparison

erect to prostrate, branched from base, 0.5–2.5(–4) dm, farinose.

erect, much-branched from shortly above base, 3–6.5 dm, glabrate or sparsely and finely farinose;

branches ascending to spreading.

nonaromatic;

petiole to 1 cm;

blade lanceolate to oblong or ovate, 0.5–4 × 0.3–1.5 cm, base cuneate, margins undulate-dentate, teeth obtuse or acute, apex obtuse or acute, densely farinose, glaucous abaxially.

nonaromatic;

blade linear, 1-veined, 1–3.5 × 0.1–0.3 cm, somewhat fleshy, cuneate, margins entire, apex obtuse to acute, glabrate or sparsely farinose abaxially.

glomerules in terminal or lateral spikes, 5–10 cm;

glomerules subglobose, 1.8–2.5 mm diam.;

bracts leaflike in inflorescence, elliptic, 0.2–1 × 0.1–0.5 cm, or absent at least in terminal 1/2 of inflorescence.

glomerules in terminal and axillary panicles or cymes of spikes, 4–9 × 5–9 cm;

glomerules widely spaced, maturing irregularly;

bracts leaflike.

perianth segments 3–4;

lobes obovate to oblong, 0.5–0.7 × 0.4–0.5 mm, apex obtuse, rounded, not keeled, covering fruit at maturity;

stamen 1;

stigmas 2.

perianth segments 5, distinct nearly to base;

lobes ovate, 0.9–1.1 × 0.9–1.1 mm, apex acute to rounded, carinate, slightly farinose, completely enclosing fruit;

stamens 5;

stigmas 2, 0.1 mm.

ovoid;

pericarp adherent, black, finely tuberculate.

mostly horizontal, some vertical, margins rounded; vertical seeds ovoid to round, 0.6–1.1 mm diam.; horizontal seeds round, 0.6–1.1 mm diam.;

seed coat reddish brown, rugose-punctate.

round, 1.4–1.6 mm diam., margins rounded;

seed coat black, rugulate.

ovoid;

pericarp nonadherent, smooth.

= 18.

= 18.