Flora of North America species comparison

usually erect, sometimes decumbent, profusely branched primarily distally, 2–12 dm, minutely puberulent with bent hairs basally, usually glabrous, rarely sparsely puberulent 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 of plant;

larger leaves with petiole 6–40(–55) mm, blade broadly rhombic-ovate, triangular-ovate, ovate, oval, or lanceolate, 20–50(–80) × 10–45 mm (distal leaves smaller, proportionately narrower), adaxial surface usually glabrous, sometimes minutely puberulent, usually minutely punctate, abaxial surface slightly paler than adaxial, usually glabrous, sometimes minutely puberulent, usually punctate with small patches of small brown cells, base obtuse to round, margins entire or sinuate, apex usually acute, less often obtuse or rounded.

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, forked ca. 4–6 times ± evenly, diffuse, usually with sticky internodal bands;

branches strongly ascending, terminating in irregular umbellate or subracemose clusters of flowers, not all pedicels attaching at same point (flowers occasionally borne singly).

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–)0.3–2.5(–5) mm;

bracts at base of perianth deciduous, usually 2, narrowly to broadly lanceolate, 0.5–1 mm, apex often acuminate;

perianth whitish, usually tinged with pink or purple [bright pink] between lobes and in tube, campanulate beyond constriction, 1–1.5 mm;

stamens 2–4, slightly 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.

1–11 per cluster, pale greenish to straw colored or tan, narrowly obconic, (2.7–)3–3.5[–4] × 1.2–1.5 mm (l/w: (2–)2.3–3.2), apex truncate or broadly low conic, glabrous;

ribs 5, acute, slightly rugose adjacent to sulci;

sulci 0.5–1 times as wide as base of ribs, slightly to prominently coarsely transverse rugose, not 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.