Flora of North America species comparison

erect to ascending, branched, 3.7–7.5(–10) dm, ± glandular-pubescent, puberulent, or glabrate.

erect to ascending, branched at base to ± simple, 1–6(–10) dm, pubescent with short-stalked glandular hairs.

malodorous, distal leaves sessile;

petiole 1.4 mm;

blade narrowly ovate to lanceolate, 5–7 × 1.5–3 cm, base cuneate, margins dentate with large, widely spaced teeth, apex acute, gland-dotted (rarely nearly glabrous).

aromatic;

petiole to 2.5 mm;

blade 1.3–4 × 0.6–2.7 cm, base cuneate, margins lyrate-sinuate, pinnatifid, or occasionally entire (in distal leaves), apex acute to subobtuse, glandular-pubescent abaxially.

terminal and lateral spikes or panicles, 3–8 cm;

glomerules globose, 2.5–3.3 mm diam.;

bracts absent or leaflike, linear, to 2.2 mm, apex acute.

axillary cymes, often arranged in terminal thyrses, 12–24 cm, subtended by cauline leaves;

bracts absent.

perianth segments 5, connate for ca. 1/2 their length, distinct portion ovate, 0.7 mm, apex obtuse, rounded abaxially, glabrous, covering fruit at maturity;

stamens 5;

stigmas 3.

perianth segments 5, distinct nearly to base, distinct portion elliptic or ovate to oblong, 0.7–1.1 × 0.5–0.7 mm, apex acute to obtuse, rounded abaxially, densely glandular-pubescent, covering fruit at maturity;

stamens 1–3(–5);

stigmas 2.

ovoid;

pericarp nonadherent, smooth, glandular.

subglobose;

pericarp adherent, membranaceous, papillose, becoming rugose, usually white-blotchy.

horizontal or vertical, reddish brown, ovoid, 0.6–0.8 × 0.8–1 mm;

seed coat smooth.

globose to subglobose, (0.5–) 0.6–0.8 × 0.5–0.7 mm, margins rounded (rarely indistinctly furrowed);

seed coat rugose.

= 18.