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.

erect or ascending, occasionally decumbent, moderately or profusely branched, primarily distally, 1–5 dm, minutely puberulent with bent hairs basally, glabrous or minutely 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 4–8[–15] mm, blade broadly ovate or oval to lanceolate, 10–21[–35] × 6–8[–13] mm (distal leaves smaller, proportionately narrower), adaxial surface usually glabrous, rarely minutely puberulent, abaxial surface paler than adaxial, glabrous, neither surface punctate, base round [obtuse], margins shallowly sinuate, apex acute, obtuse, or 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).

terminal or axillary, forked ca. 3–6 times ± evenly (or clearly unevenly), diffuse, with sticky internodal bands;

branches usually terminating in umbels or flowers borne singly, usually well beyond leaves.

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 0.3–4.5 mm;

bracts at base of perianth quickly deciduous, 2, linear-lanceolate to lanceolate [ovate], 0.5–0.6 mm;

perianth whitish to pale pink or purplish, campanulate beyond constriction, 1 mm;

stamens 2–3, included or barely 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.

1–7 per umbel, straw colored or gray-brown, obpyramidal, 2.5–3.1 × 1.3–1.9 mm (l/w: 1.6–2.1), base stipelike, apex round-truncate, glabrous;

ribs 3–4(–5), acute or winglike, tapering to pedicel, slightly rugose or undulate near sulci;

sulci 0.5–1 times as wide as base of ribs, coarsely transversely rugose, smooth or very faintly papillate.