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.

many, decumbent to ascending, clumped or cespitose, green to grayish green, terete, 5–15 cm, branched mainly proximally, subglabrous and ± glaucous proximal to inflorescence, ± canescent distally or throughout.

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 proximal to inflorescence, alternate distally, usually crowded and exceeding internodes, subsessile or petiole 1–2 mm;

blade green or grayish green, usually broadly lanceolate-elliptic to ovate or obovate, rarely suborbiculate, 0.6–2.4 × 0.4–1.3(–1.9) cm, base rounded to subcordate, margins low denticulate, 4–9 teeth per side, veins indistinct, 4–7 per side, apex obtuse proximally to acute distally, surfaces usually subglabrous, rarely canescent, especially on margins and veins;

bracts much reduced.

erect racemes, densely strigillose, often mixed sparsely glandular puberulent.

ascending to erect, sparse racemes or loose panicles, ± densely canescent and glandular puberulent.

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;

buds 7–13 × 3–5 mm, apex acute, sometimes with stigma exserted;

pedicel 3–10 mm;

floral tube 3.2–5.5 × 2.2–4.2 mm, slightly raised ring of spreading hairs0.4–1 mm from base inside;

sepals (5–)8.5–14 ×1.8–2.9 mm;

petals pink to rose-purple, obcordate, (12–)15–26 × (7–)9–14.6 mm, apical notch 2.5–7.2 mm;

filaments cream to pink, those of longer stamens 8.5–16 mm, those of shorter ones 5.5–11 mm;

anthers cream-yellow, 1.6–2.9 × 0.6–1.3 mm;

ovary 9–22 mm, usually canescent and glandular puberulent, rarely subglabrous;

style cream to light pink, 11–23 mm, glabrous, stigma deeply 4-lobed, 1–1.5 × 2.2–4.5 mm, exserted beyond anthers.

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

pedicel 10–35 mm.

straight, subclavate, 16–40 mm, surfaces canescent and glandular puberulent;

pedicel 5–15 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 obovoid, 1.4–2.1 × 0.6–0.9 mm, with low chalazal collar 0.4–0.5 mm wide, light or grayish brown, surface papillose;

coma easily detached, tawny, 5–9 mm.

= 36.

= 36.