Flora of North America species comparison

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

erect to ascending, much-branched to simple, 1–10.5 dm, 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.

nonaromatic;

petiole 0.2–9 cm;

blade narrowly to broadly lanceolate, rhombic, ovate, or triangular, 1.2–12(–15) × 0.5–7.5(–9) cm, base cuneate to truncate, margins serrate, irregularly dentate, or entire, often with 2 basal lobes, apex acute to acuminate, 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 compound spikes, 5–17 cm;

glomerules irregularly rounded, 4–7 mm diam.;

bracts absent.

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 deltate, 0.7–1.5 × 0.7–1.3 mm, apex obtuse, farinose, often prominently keeled, covering fruit at maturity or not;

stamens 5;

stigmas 2, 0.3–0.5 mm.

or utricles depressed-ovoid;

pericarp adherent or nonadherent near stylar base, alveolate-rugose.

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

seed coat black, smooth.

round, 1–2 mm diam., margins rounded;

seed coat brown to black, honeycomb pitted.

ovoid;

pericarp nonadherent, reticulate-punctate.

= 36.