Flora of North America species comparison

several to many, erect to ascending, loosely clumped, terete, 10–25 cm, rarely branched distal to base, usually short-villous and strigillose throughout, mixed sparsely glandular puberulent distally, rarely subglabrous proximal to inflorescence.

erect, rarely clumped, terete, 10–40(–45) cm, usually simple, rarely branched, glabrous proximal to inflorescence with sparsely strigillose raised lines decurrent from margins of petioles, mixed strigillose and glandular puberulent distally.

opposite proximal to inflorescence, alternate and usually crowded distally, sessile;

blade gray-green, narrowly to broadly ovate, 1.3–2.6 × 0.8–2 cm, base rounded to subcordate, margins usually serrulate, 6–12 teeth per side, rarely subentire, veins inconspicuous, 3–5 per side, apex rounded proximally to acute distally, surfaces sparsely short-villous to subglabrous and glaucous;

bracts much reduced.

opposite and crowded proximal to inflorescence, alternate and scattered distally, subsessile;

blade narrowly oblong or narrowly lanceolate to linear, (1.2–)2–4.5 × 0.1–0.5 cm, base attenuate, margins irregularly denticulate, 2–4 teeth per side, veins inconspicuous, 3 or 4 per side, apex subacute to obtuse or ± truncate, surfaces glabrous with sparsely strigillose margins and adaxial midrib;

bracts much reduced and narrower.

erect, compact racemes, densely canescent and glandular puberulent, or subglabrous, only ovaries pubescent.

nodding in bud, suberect later, racemes, simple, mixed strigillose and glandular puberulent, sometimes subglabrous.

erect;

buds often purplish green, 9–11 × 3.5–5 mm, blunt;

pedicel 6–12 mm;

floral tube 2.1–4 × 2.9–5 mm, prominent ring of tissue 0.3–0.6 mm wide, edged by spreading hairs, 0.9–1.8 mm from base of tube inside;

sepals purplish green, 5–10.5 × 2–3.5 mm, apex acute;

petals pink to rose-purple, obcordate, 10–22.5 × 9.5–15.5 mm, apical notch 2–6.5 mm;

filaments cream, those of longer stamens 6.5–14 mm, those of shorter ones 3.5–11 mm;

anthers cream 1.9–3.3 × 0.7–1.2 mm;

ovary 12–22 mm, ± densely canescent and glandular puberulent;

style white to light pink, 10.5–18 mm, sparsely villous just proximal to stigma, stigma broadly 4-lobed, 1–1.8 × 2.4–4.2 mm, exserted beyond anthers.

erect, sometimes starting in third most-proximal node;

buds 3–6.5 × 1–2 mm;

pedicel 4–15 mm;

floral tube 0.7–1.6 × 1–2.2 mm, with or often without ring of spreading hairs at mouth inside;

sepals 1.2–3.5 × 0.7–1.2 mm, apex subacute;

petals white, 2–5.5 × 1.2–3.1 mm, apical notch 0.3–1 mm;

filaments white or cream, those of longer stamens 1–2.5 mm, those of shorter ones 0.5–1.4 mm;

anthers cream, 0.4–0.6 × 0.3–0.5 mm;

ovary usually purplish red, 10–20 mm, sparsely mixed strigillose and glandular puberulent or subglabrous;

style cream or white, 0.7–2.5 mm, stigma cylindrical to clavate, entire, 0.8–2 × 0.2–1.2 mm, surrounded by anthers.

25–45 mm, surfaces canescent and glandular puberulent;

pedicel 6–25 mm.

slender, 30–55 mm, surfaces sparsely strigillose and glandular puberulent;

pedicel 8–38 mm.

narrowly obovoid, 1.4–1.9 × 0.6–0.7 mm, with low, obscure chalazal collar, light brown, surface papillose;

coma easily detached, somewhat tawny, 4–8 mm.

narrowly attenuate, 1.4–2 × 0.3–0.5 mm, chalazal collar conspicuous, 0.1–0.3 mm, light brown or blond, surface papillose;

coma persistent, white, 3–5 mm.

= 36.

= 36.