Flora of North America species comparison

erect or ascending, unbranched when small to branched ca. 1–5 times throughout, 10–60 dm, minutely puberulent to glandular-pubescent basally, usually glandular-pubescent, sometimes minutely puberulent or glabrous distally.

decumbent to ascending, sparingly branched throughout, 2–8 dm, densely glandular-pubescent or pubescent with minute curled hairs, sometimes also with sparse long-spreading hairs basally, usually glabrous sometimes glandular-puberulent distally.

mostly in basal 1/2;

larger leaves with petiole 2–22 mm, blade oval, ovate, oblong, or lanceolate, 12–37 × 5–20 mm (distal leaves smaller, proportionately narrower), adaxial surface glabrate, sparsely puberulent, sometimes glandular-pubescent, abaxial surface not noticeably to prominently paler than adaxial, glabrate or occasionally glandular-pubescent, both surfaces usually punctate with dark cells, base round to obtuse, margins sinuate to sinuate-crisped, apex acute, obtuse, or round.

mostly in basal 1/2 of plant;

larger leaves with petiole 4–22 mm, blade triangular-ovate to ovate or suborbiculate, 20–40 × 15–32 mm (distal leaves smaller, proportionately narrower), adaxial surface glabrate to densely spreading-puberulent, rarely lightly punctate, abaxial surface paler than adaxial, glabrate to moderately glandular-puberulent, usually punctate with small patches of large gray cells, base round, truncate, or cordate, usually oblique, margins entire or sinuate, apex obtuse to round.

terminal, branched ca. 1–4 times unequally, without sticky internodal bands;

branches strongly ascending, terminating in compact, capitate or subcapitate flower clusters, axis 0–2.5 mm.

axillary or terminal, forked ca. 3–5 times unequally, open, without sticky internodal bands;

branches strongly ascending, terminating in loose, cymose, 1–3-flowered clusters.

pedicel 0.8–2.5 mm;

bracts at base of perianth persistent, 1–3, ovate to obovate, 2.5–4 mm, apex apiculate;

perianth whitish to pale pink, funnelform beyond constriction, 2.5–4 mm;

stamens 3–4(–5), well exserted.

pedicel 0.5–5 mm;

bracts at base of perianth persistent, 2–3, narrowly to broadly lanceolate, 1–2 mm, apex often acuminate;

perianth purplish pink to pink (white), widely funnelform beyond constriction, 5–10 mm;

stamens (4–)5–8, well exserted.

3–9 per cluster, straw colored to grayish tan, broadly obovoid, 2.3–3 × 1.3–1.7 mm (l/w: 1.6–2.1), apex round or broadly obtuse, glabrous;

ribs 5, acute, smooth;

sulci 2–2.5 times as wide as base of ribs, not or shallowly rugose, lightly papillate.

borne singly (or 2–3 in open clusters), gray-brown, oblong-obovoid, 2.7–3.6 × 1.3–1.6 mm (l/w: [1.7–]2.1–2.6), apex rounded to broad-conic, glabrous;

ribs 5, round or bluntly angled, not overhanging sulci, smooth;

sulci 1–2 times as wide as base of ribs, not rugose (rarely deeply transversely rugose), minutely papillate.