Flora of North America species comparison

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

erect or decumbent, branched, 1.5–5(–10) 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 to 1.7 cm;

blade ovate to elliptic or oblong, 1.5–4(–8) × 0.4–2.5 cm, base rounded to cuneate, apex obtuse to rounded or acute, glabrous.

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

bracts variable.

lateral cymes, sometimes terminal and axillary spikelike panicles;

bracts absent or leaflike and gradually reduced in size distally.

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 elliptic to oblong, 0.7–1 × 0.5–0.8 mm, apex obtuse or rounded, not keeled, glabrous, not covering fruit at maturity;

stamen 1;

stigmas 2, 0.1 mm.

ovoid;

pericarp nonadherent, smooth.

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

seed coat black, smooth, shiny.

0.8–1.3 mm diam.;

seed coat brown-black, dull.

depressed-ovoid;

pericarp nonadherent, smooth.

= 18.

= 18.