Flora of North America species comparison

erect, strict, terete, 4–55 cm, simple or well branched in age, subglabrous proximally to mixed strigillose and glandular puberulent distally, with raised strigillose lines decurrent from margins of petioles.

erect, loosely or not clumped, terete, 7–30 cm, usually simple, rarely branched, subglabrous with raised strigillose lines decurrent from margins of petioles, or densely strigillose and without raised lines.

opposite proximal to inflorescence, alternate and reduced distally, often ± appressed, usually subsessile, rarely petiole 1–3 mm, often clasping;

blade obovate proximally to ovate, lanceolate, or narrowly elliptic distally, 1–5.5(–6.5) × 0.4–2(–2.4) cm, base rounded or obtuse, margins low denticulate, 9–30 teeth per side, veins ± conspicuous, 3–6 per side, apex subacute, surfaces subglabrous with strigillose margins;

bracts much reduced.

opposite proximal to inflorescence, alternate distally, petioles 1–3 mm proximally, subsessile distally;

blade ovate to narrowly ovate, coriaceous, 1.5–3 × 0.7–1.2 cm, base rounded to cuneate, margins denticulate, 8–12 teeth per side, veins indistinct, 4–9 per side, apex obtuse proximally to acute distally, surfaces sparsely strigillose, mainly on margins and midrib;

bracts not much reduced.

erect, sometimes nodding in bud, racemes, sometimes sparsely branched.

erect racemes, rarely branched, densely strigillose.

erect;

buds 2–3.5 × 1.8–2.5 mm;

pedicel 0–1 mm;

floral tube 0.8–1.4 × 0.8–1.9 mm, ring of sparse spreading hairs at mouth inside;

sepals sometimes flushed red, 1.2–3.5 × 0.6–1.4 mm, abaxial surface strigillose and sometimes mixed glandular puberulent;

petals usually white, infrequently pink, 2.2–5(–7) × 1.7–3.2 mm, apical notch 0.4–1.5 mm;

filaments usually cream, rarely light pink, those of longer stamens 2–3.5 mm, those of shorter ones 1–2 mm;

anthers cream to light yellow, 0.3–0.8 × 0.3–0.5 mm;

ovary 9–30 mm, densely strigillose and glandular puberulent;

style cream or yellow, 1.6–2.8 mm, stigma usually narrowly to broadly clavate, rarely subcapitate, 1–3 × 0.8–2 mm, surrounded by at least longer anthers.

erect;

buds 3–4 × 1.5–2.2 mm;

pedicel 4–5 mm;

floral tube 1.5–2 × 1.6–2.2 mm, sparsely glandular puberulent, sometimes mixed strigillose;

sepals often purplish red, 2–3.2 ×1.5–2.4 mm;

petals white, often red-tinged at apex, 3.8–5 × 2–3 mm, apical notch 0.4–0.8 mm;

filaments cream, those of longer stamens 1.4–2.3 mm, those of shorter ones 0.8–1.4 mm;

anthers 0.4–0.6 × 0.3–0.5 mm;

ovary 10–18 mm, densely strigillose and glandular puberulent;

style yellow or light pink, 2–2.3 mm, stigma broadly clavate, 0.8–1 × 0.6–0.7 mm, surrounded by longer anthers.

30–55(–70) mm, surfaces mixed strigillose and glandular puberulent; usually subsessile, rarely pedicel 1–5 mm, often appressed to stem.

30–45 mm, relatively thick (2–3 mm), surfaces ± sparsely glandular puberulent and mixed strigillose;

pedicel 5–16 mm.

very narrowly obovoid, 1–1.6(–1.8) × 0.4–0.6 mm, chalazal collar 0.1–0.2 mm, light brown or gray, surface rugose to papillose;

coma usually readily detached, white, 3–9 mm.

narrowly obovoid, 1.7–2.2 × 0.6–0.8 mm, chalazal collar inconspicuous, gray to light brown, surface low papillose or reticulate;

coma readily detached, white, very full, 10–15 mm.

= 36.

= 36.