Flora of North America species comparison

erect, simple to loosely clustered, terete, 15–95 cm, simple to well branched, densely strigillose, often mixed glandular puberulent on inflorescence, rarely with faint strigillose lines decurrent from margins of petioles.

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 proximally, usually alternate, rarely fasciculate distally, subsessile;

blade linear to very narrowly elliptic or sublanceolate, 2–7.5 × 0.1–0.7 cm, usually longer than internodes, base rounded to subcuneate, margins subentire, 4–7 inconspicuous teeth per side, sometimes revolute, lateral veins inconspicuous, apex obtuse proximally to acute distally, both surfaces densely strigillose, increasing distally;

bracts not 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 racemes, densely strigillose, often mixed sparsely glandular puberulent.

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

erect;

buds 3–5 × 1.5–2.5 mm;

pedicel 5–12 mm;

floral tube 0.8–1.5 × 1.2–1.8 mm, ring of spreading hairs at mouth inside;

sepals 2.5–4.5 × 0.9–1.3 mm, abaxial surface strigillose;

petals obcordate, white to light pink, 3.5–7 × 1.6–4 mm, apical notch 1–1.8 mm;

filaments white or cream, those of longer stamens 0.8–3.5 mm, those of shorter ones 0.6–2.5 mm;

anthers cream, 0.5–0.9 × 0.4–0.6 mm;

ovary 12–18 mm, densely strigillose, sometimes mixed glandular puberulent;

style cream, 2–3.8 mm, stigma narrowly clavate, entire, 1–1.8 × 0.5–1.2 mm, usually surrounded by, rarely 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.

straight, narrowly cylindrical, 35–80 mm, surfaces densely strigillose;

pedicel 10–35 mm.

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

pedicel 8–38 mm.

narrowly fusiform to narrowly obovoid, 1.5–2.2 ×0.5–0.7 mm, chalazal collar 0.1–0.2 mm, ± pronounced, surface papillose;

coma persistent, dingy white, 6–8 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.