Flora of North America species comparison

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

erect, branched, 4.5–10 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, sessile;

proximal blades oblong-ovate to ovate lanceolate, 1.7–3.6 × 1–2.8 cm, base cuneate, margins finely serrate;

distal blades tending toward lanceolate and margins entire, apex obtuse, farinose.

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

bracts variable.

glomerules in terminal moniliform spikes, 1–3 cm;

glomerules globose, 1.8–2 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, 0.5–0.7 × 0.6–0.7 mm, apex rounded, farinose, slightly keeled, reflexed and exposing fruit at maturity;

stamens 5;

stigmas 2, 0.2 mm.

ovoid;

pericarp nonadherent, smooth.

depressed-ovoid;

pericarp adherent, smooth.

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

seed coat black, smooth, shiny.

lenticular, oval, 0.9–1.5 mm diam.;

seed coat black, smooth, margins rounded.

= 18.

= 36.