Flora of North America species comparison

erect or ascending, sparingly branched throughout, 30–70 dm, densely glandular-villous, or glandular-puberulent, with spreading, nonglandular hairs basally, glabrous distally.

prostrate or decumbent-ascending, usually profusely branched throughout, 10–80 dm, minutely puberulent with flat hairs, usually also with spreading hairs, sometimes also glandular basally, glabrous distally.

mostly in basal 1/2;

larger leaves with petiole 10–30 mm, blade oval, oblong, ovate, or ± triangular, 18–45 × 13–30 mm (distal leaves usually smaller, sometimes longer, proportionately narrower), adaxial surface lightly to densely glandular-pubescent, abaxial surface paler than adaxial, lightly to densely glandular-pubescent, neither surface punctate or both minutely punctate with clusters of brown cells, base truncate, round, or obtuse, margins sinuate, sometimes crisped, apex round to obtuse, rarely acute.

mostly in basal 1/2;

larger leaves with petiole 7–20 mm, blade oblong-ovate, oval, ovate, or lanceolate, 20–45 × 9–25 mm (distal leaves usually shorter, proportionately narrower), adaxial surface glabrous or sparsely and minutely puberulent, abaxial surface paler than adaxial, glabrous or minutely puberulent, sometimes glandular, neither surface punctate or both punctate with minute clusters of brown cells, base truncate, rounded, or obtuse, margins sinuate to sinuate-crisped, apex round to obtuse or acute.

terminal and axillary, branched 1–4 times unequally, with sticky internodal bands;

branches strongly ascending, terminating in spicate or racemose flower clusters, axis 10–55 mm.

terminal and axillary, forked ca. 3–6 times unequally, diffuse, usually with sticky internodal bands;

branches strongly ascending, terminating in spicate or racemose flower clusters, axis 10–40 mm.

pedicel 0.4–2.3[–3.7] mm;

bracts at base of perianth usually soon deciduous, usually 2, narrowly to broadly lanceolate, 0.7–1.8 mm, apex often acuminate;

perianth white to pale pink, campanulate distal to constriction, 1–1.3 mm;

stamens (2–)3, slightly exserted or included.

pedicel 0.1–1.7 mm;

bract at base of perianth usually soon deciduous, usually 1, broadly lanceolate to lance-attenuate, 0.5–1.2 mm;

perianth whitish to purplish pink, campanulate distal to constriction, 1–1.3 mm;

stamens 2, slightly exserted.

5–33 per cluster, usually overlapping or 2–4 in group separated by small gap from next group, straw colored to grayish or reddish tan, broadly obovoid, 1.9–2.4(–2.8) × 1.1–1.3 mm (l/w: 1.7–2.1[–2.3]), apex rounded, glabrous;

ribs 5, obtuse-rounded to obtuse, often with low winglike ridge, slightly rugose near sulci;

sulci (0.2–)0.5 times as wide as base of ribs, slightly rugose, not papillate.

2–12 per cluster, usually remotely spaced, sometimes about 1/2 overlapped, occasionally ± paired, straw colored to grayish tan, narrowly obovoid, 2.2–3(–3.8) × 0.9–1.1 (–1.3) mm (l/w: [1.9–]2.2–3.1), apex round or round-obtuse, glabrous;

ribs 5, obtuse or round-obtuse, strongly rugose near sulci;

sulci 0.5–1 times as wide as base of ribs, not or slightly rugose, papillate.

= ca. 52.

= 52.