Flora of North America species comparison

erect to ascending, branched, 4–6 dm, ± glandular-pubescent, white-villous.

prostrate or ascending, much-branched, 1.5–7 dm, densely puberulent.

aromatic, distal leaves sessile;

petiole 2–2.5 mm;

blade lanceolate, 2–9 × 0.5–4 cm, base cuneate, margins of distal leaves shallowly dentate to sinuate-pinnatifid, apex acuminate, villous and copiously gland-dotted (rarely nearly glabrous).

nonaromatic;

petiole absent or indistinguishable from blade;

blade oblong to elliptic, 0.6–4.5 × 0.1–1(–2) cm, base narrowly cuneate, margins deeply and irregularly pinnatifid with narrow, linear lobes, sometimes only dentate, apex acute to obtuse, glandular-pubescent abaxially.

terminal and axillary spikes, 3–15 cm;

glomerules globose, 1.7–2.3 mm diam.;

bracts leaflike, narrowly ovate, 1–1.8 cm, apex acuminate.

lateral glomerules 1.8–3.5 mm diam.;

bracts similar to cauline leaves.

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

stamens 5;

stigmas 3.

perianth segments (4–)5, connate for most of their length, urceolate, tube with distinct reticulate veins, distinct portion 0.1–0.5 mm, margins dentate, apex rounded to broadly acute, accrescent and coriaceous with age, enclosing fruit;

stamens 5;

stigmas (2–)3(–5).

ovoid;

pericarp nonadherent, glandular.

obovoid;

pericarp loosely adherent, membranaceous, with many yellow glandular hairs near apex, otherwise smooth.

vertical, black, ovoid, 0.5–0.8 × 0.8 mm;

seed coat smooth.

vertical, suborbicular to ovoid, 0.8–1.3 × 0.8–1 mm;

seed coat smooth.