Flora of North America species comparison

erect to ascending, much-branched, 3–10(–15) dm, ± glandular-pubescent.

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

aromatic, distal leaves sessile;

petiole to 18 mm;

blade ovate to oblong-lanceolate or lanceolate, proximal ones mostly lanceolate, 2–8(–12) × 0.5–4(–5.5) cm, base cuneate, margins entire, dentate, or laciniate, apex obtuse to attenuate, copiously gland-dotted (rarely 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.

lateral spikes, 3–7 cm;

glomerules globose, 1.5–2.3 mm diam.;

bracts leaflike, lanceolate, oblanceolate, spatulate, or linear, 0.3–2.5 cm, apex obtuse, acute, or attenuate.

lateral glomerules 1.8–3.5 mm diam.;

bracts similar to cauline leaves.

perianth segments 4–5, connate for ca. 1/2 their length, distinct portion ovate, rounded abaxially, 0.7–1 mm, apex obtuse, glandular-pubescent, covering seed at maturity;

stamens 4–5;

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).

horizontal or vertical, reddish brown, ovoid, 0.6–1 × 0.4–0.5 mm;

seed coat rugose to smooth.

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

seed coat smooth.

ovoid;

pericarp nonadherent, rugose to smooth.

obovoid;

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