Flora of North America species comparison

erect to prostrate, much-branched, 0.1–3.5 dm, glabrous.

erect to ascending, much-branched, 1.2–3.5 dm, glabrous to sparsely farinose.

nonaromatic;

petiole to 0.28 cm;

blade deltate or narrowly deltate, 0.8–6 × 0.2–3.5 cm, base cuneate, margins entire or broadly dentate, apex acute to obtuse.

non-aromatic;

petiole 0.2–1 cm;

blade rhombic-ovate to elliptic or oblong, 3-veined, 0.5–2 × 0.3–1 cm, base cuneate, margins entire or occasionally with few teeth or lobes, apex rounded or obtuse, sparsely farinose.

lateral glomerules sessile on lateral branched spikes;

glomerules subglobose, 3–4 mm diam.;

bracts oblanceolate to linear, 0.2–1.5 cm.

glomerules in terminal panicles, 5–29 × 8–27 cm;

glomerules small, maturing mixed;

bracts linear.

perianth segments 3, connate almost to apex into 0.5–0.8 mm tube;

lobes deltate, 0.1–0.5 × 0.3–0.4 mm, membranous, apex acute, flat or occasionally keeled-corniculate, glabrous, green and covering fruit at maturity;

stamen 1;

stigmas 2, 0.2 mm.

perianth segments 5, distinct nearly to base;

lobes ovate to oblong, slightly keeled, 0.6–0.7 × 0.3–0.5 mm, apex acute to obtuse, glabrous, irregularly covering fruit at maturity;

stamens 5;

stigmas 2, 0.2 mm.

ovoid;

pericarp adherent, warty, smooth.

vertical and horizontal, ovoid, 0.6–0.9 mm diam., margins rounded;

seed coat black, smooth.

0.7–0.8 × 0.4–0.5 mm, margins rounded;

seed coat black, smooth.

ovoid;

pericarp nonadherent, reticulate-punctate.