Flora of North America species comparison

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

erect to spreading, simple proximally, branched distally, 1–8 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.

non-aromatic;

petiole 0.4–2.5 cm;

blade usually broadly triangular, sometimes ovate to elliptic, 0.7–6 cm thick, base truncate or cuneate, margins entire or with a pair of basal teeth or lobes, apex rounded to obtuse, farinose abaxially.

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

bracts variable.

glomerules in terminal and axillary interrupted spikes, 16–22 × 4–5 cm;

glomerules 2–5 mm diam., maturing mixed;

bracts small, margins entire.

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, distinct nearly to base;

lobes ovate, 0.7–1 × 0.5–0.9 mm, apex obtuse, carinate, farinose to subglabrous, completely covering fruit at maturity;

stamens 5;

stigmas 2, 0.2–0.5 mm.

ovoid;

pericarp nonadherent, smooth.

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

seed coat black, smooth, shiny.

round, 1–1.3 mm diam.;

seed coat dark reddish brown to black (sometimes with light streaks), ± smooth.

ovoid;

pericarp nonadherent, warty-smooth.

= 18.

= 18.