Flora of North America species comparison

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

erect, branched, 2–6 dm, glabrous.

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;

petiole 0.5–2.5 cm;

blade oblong-ovoid to lanceolate, 2–4.5 × 0.5–1.5 cm, base cuneate, margins entire or proximal ones with few teeth, apex acute to acuminate, sparsely farinose.

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 lateral spikes and panicles, 6–15 cm;

glomerules irregularly globose, 0.5–2 mm diam., flowers in different stages of development;

bracts absent.

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 obovate, 0.5–0.7 × 0.5–0.7 mm, apex rounded, faintly keeled or not keeled, scarcely farinose, partly covering fruit at maturity;

stamens 5;

stigmas 2, 0.2 mm.

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.

lenticular, margins round, 0.9–1.3 mm diam.;

seed coat black, reticulate-alveolate to smooth.

ovoid;

pericarp nonadherent, smooth.

depressed-ovoid;

pericarp nonadherent, smooth.

= 18.

= 18.