Flora of North America species comparison

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

erect to ascending, usually much-branched, 0.2–0.7(–10) dm, densely 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 0.5–2(–3) cm, shorter than or equaling leaf blades;

blade ovate to rhombic-ovate, 1–3.5(–4.5) × 1–3(–4) cm, base broadly cuneate to abruptly truncate, distinctly 3-lobed, margins dentate to ± entire, apex obtuse (rarely subacute), grayish, usually densely farinose on both surfaces.

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

bracts variable.

glomerules in terminal and lateral compound spikes, 2–19 cm;

glomerules subglobose, 3–4 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, distinct nearly to base;

lobes ovate, ca. 1 × 1.1 mm, apex obtuse, densely farinose, keeled, covering fruit at maturity;

stamens 5;

stigmas 2, 0.2 mm.

ovoid;

pericarp nonadherent, smooth.

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

seed coat black, smooth, shiny.

lenticular to compressed-subglobose, 0.8–1.25 mm diam.;

seed coat black, smooth or faintly reticulate.

depressed-ovoid;

pericarp nonadherent, smooth to indistinctly granulate.

= 18.

= 54.