Flora of North America species comparison

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

erect, [very bushy-branched] profusely branched from base to ± simple, [0.4–]0.7–2.5[–5] dm, glabrous or with scattered inflated hairs and uniseriate nonglandular trichomes, especially towards base.

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.

non-aromatic;

petiole to 0.4 mm;

blade [0.8–]2.8–3.4[–4.1] × 0.1–0.3[–0.6] cm, base attenuate, margins entire (to occasionally shallowly erose-dentate), apex acute, mucronate, glabrous adaxially.

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

bracts absent.

a terminal thyrse, 2.2–4.5[–13] cm, or lax, pyramidal cymes, bearing flowers almost from base;

bracts absent.

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.

perianth segments 5, distinct nearly to base, distinct portions obovate to elliptic or ovate, with low tubercle or sometimes keeled abaxially, 0.5–0.7 × 0.3–0.4 mm, apex obtuse to subacute, glabrous, loosely covering fruit at maturity;

stamens 5 (or absent in pistillate flowers in distal portion of inflorescence);

stigmas 2.

subglobose;

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

subglobose;

pericarp adherent, membranaceous, finely granular.

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

seed coat rugose.

subglobose, 0.5–0.8 × 0.4–0.5 mm, margins rimmed;

seed coat smooth.

= 18.