Flora of North America species comparison

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

erect to ascending, branched, 3–5.5 dm, pilose with glandular trichomes or sessile glands.

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.

aromatic;

petiole 0.5–1.4 cm;

blade ovate to broadly ovate, 0.9–1.6 × 0.8–1.4 cm, somewhat reduced in inflorescence, base cuneate to truncate, apex acute, glandular-puberulose and pilosulose on veins.

lateral glomerules 1.8–3.5 mm diam.;

bracts similar to cauline leaves.

axillary glomerules;

glomerules subglobose, 1.5–2.5 mm diam.;

bracts leaflike, ovate, 3–5 mm, margins crenate-dentate, apex acute.

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).

perianth segments 5, distinct nearly to base, distinct portions narrow-oblong, prominently keeled especially apically, 0.8–0.9 × 0.3–0.4 mm, apex acute, not crested, covered with septate hairs, becoming coriaceous and white in fruit;

stamens absent or 1;

stigmas 2.

obovoid;

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

ovoid;

pericarp adherent, membranaceous, slightly rugose.

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

seed coat smooth.

reddish brown, ovoid, 0.6 × 0.3–0.4 mm, margins keeled over radicle and channeled over cotyledons;

seed coat smooth.