Flora of North America species comparison

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

erect, simple, 1.8–5.5 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.

nonaromatic;

petiole 0.3–4.5 cm, usually shorter than leaves;

blade distinctly 3-lobed, narrowly ovate to elongate, (1.4–)2.7–6.2 × (0.5–)1.2–2.5 cm, base cuneate, margins toothed or nearly entire, with pair of basal lobes, apex obtuse to subacute, 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 and lateral spikes and panicles, 11 cm;

glomerules irregularly globose, in different stages of development, 1.7–1.9 mm diam.;

bracts absent or leaflike.

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, connate at base into 0.3 mm tube;

lobes ovate, 0.5–0.9 × 0.5–0.8 mm, apex acute, farinose, keeled, covering fruit at maturity;

stamens 5;

stigmas 2, 0.3 mm.

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

seed coat black, smooth.

lenticular, 0.9–1 mm diam.;

seed coat black, honeycomb-pitted.

ovoid;

pericarp nonadherent, reticulate-punctate.

depressed-ovoid;

pericarp nonadherent, smooth.

= 18.