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, terete, (5–)20–95 cm, often well branched, especially distally, densely strigillose proximal to inflorescence, without decurrent lines, 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 proximal to inflorescence, alternate distally, petiole 1–6 mm;

blade dark green, narrowly ovate to ovate, 3–8 × 1.5–3.4 cm, subequal to internodes, base broadly cuneate to truncate, margins irregularly serrulate with 20–30 teeth per side, veins prominent, 3–5 per side, apex acuminate to acute, surfaces strigillose, especially along veins and margins;

bracts much reduced.

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

nodding to erect, racemes or loose panicles, strigillose 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 4–5x 1.5–3 mm;

pedicel 2–18 mm;

floral tube 1.2–2 × 1.5–2.5 mm, conspicuous ring of spreading hairs at mouth inside;

sepals often flushed red, keeled, 5–6.5 × 1.2–1.7 mm, abaxial surface strigillose and glandular puberulent;

petals rose-purple, obcordate, 7.5–10 × 4–5.5 mm, apical notch 2.7–4.2 mm;

filaments light pink, those of longer stamens 3.5–5.5 mm, those of shorter ones 1.5–2.4 mm;

anthers yellow, 1–1.2 × 0.5–0.6 mm;

ovary 20–30 mm, strigillose and glandular puberulent;

style rose-purple to white, 3.5–7.5 mm, glabrous or with scattered long hairs near base, stigma deeply 4-lobed, 1.5–2 × 2.5–4 mm, lobes 1.2–1.8 mm, exserted beyond or, sometimes, surrounded by anthers.

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

pedicel 10–35 mm.

40–80 mm, surfaces strigillose and glandular puberulent;

pedicel 8–20 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.

obovoid, 1–1.2 × 0.4–0.5 mm, chalazal collar inconspicuous, 0.6–0.8 mm wide, brown, surface coarsely papillose;

coma readily detached, dull white, 5–6 mm.

= 36.

= 36.