Flora of North America species comparison

erect or semierect, branched, 1–5.5 dm, glabrous or sparsely farinose.

erect, branched, 3–15 dm, glabrous.

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.

nonaromatic;

petiole 0.15–0.45 cm;

blade ovate to triangular, 3.5–15 × 2–9 cm, base cordate to truncate, margins sinuate-dentate with 1–5 coarse, acute teeth, distal leaves entire or with few small teeth, apex acute, glabrous.

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

bracts variable.

glomerules in terminal and lateral spikes and panicles, 6–15 cm;

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

bracts absent.

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.

perianth segments 5, connate into 0.5 mm tube;

lobes ovate to lanceolate, 0.7–1 × 0.4–0.6 mm, apex retuse, slightly keeled, glabrous, margins meeting or separated by as much as their width, exposing more than 1/2 fruit at maturity;

stamens 5;

stigmas 2, 0.1 mm.

ovoid;

pericarp nonadherent, smooth.

depressed-ovoid;

pericarp adherent, chartaceous, smooth.

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

seed coat black, smooth, shiny.

lenticular, 1.3–1.9 mm diam.;

seed coat black, indistinctly honeycombed to nearly smooth, margins rounded.

= 18.

= 18.