Flora of North America species comparison

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

erect to decumbent, branched from base, 1–6 dm, farinose.

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 0.01–0.25 cm;

blade deltate or trullate to narrowly trullate, rarely lanceolate, 0.8–6 × 0.4–3.6 cm, base cuneate, margins serrate, apex acute.

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

bracts variable.

glomerules in terminal dense spikes;

glomerules subglobose, 3–5 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 connate into 0.5 mm tube;

lobes deltate, 0.2–0.3 × 0.7–0.8 mm, apex acute, not keeled, glabrous, covering fruit at maturity;

stamen 1;

stigmas 2.

ovoid;

pericarp nonadherent, smooth.

ovoid;

pericarp adherent, smooth.

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

seed coat black, smooth, shiny.

ovoid, 0.9–1.1 mm diam., margins rounded;

seed coat black, reticulate-punctate.

= 18.

= 36.