Flora of North America species comparison

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

erect, simple, 1.8–5.5 dm, glabrous to sparsely 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 0.3–4.5 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.

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, 11 cm;

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

bracts absent or leaflike.

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 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.

ovoid;

pericarp nonadherent, smooth.

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

seed coat black, smooth, shiny.

lenticular, 0.9–1 mm diam.;

seed coat black, honeycomb-pitted.

depressed-ovoid;

pericarp nonadherent, smooth.

= 18.

= 18.