Flora of North America species comparison

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

erect or semierect, branched, 1–5.5 dm, glabrous or 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 to 1 cm;

blade linear, 1-veined, 1–3(–5) × 0.1–0.2(–0.4) cm, somewhat fleshy, base cuneate, margins entire, apex acute to acuminate, glabrous.

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 axillary panicles, 6–25 × 5–20 cm, widely spaced, maturing at different times;

bracts variable.

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 into 0.3–0.4 mm tube;

lobes ovate or orbicular-obovate, 1–1.4 mm, apex obtuse or rounded, cucullate, carinate, sparsely farinose, largely covering fruit at maturity;

stamens 5;

stigmas 2, 0.1 mm.

ovoid;

pericarp nonadherent, smooth.

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

seed coat black, smooth.

ovoid, 1.2–1.6 mm diam., margins obtuse with narrow rim;

seed coat black, smooth, shiny.

ovoid;

pericarp nonadherent, reticulate-punctate.

= 18.