Flora of North America species comparison

strict, erect, terete, 2–50(–60) cm, rarely branched only in larger plants, subglabrous proximal to inflorescence except for raised strigillose lines decurrent from margins of petioles, or sometimes ± densely long-villous throughout with inconspicuous decurrent lines.

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 proximally, alternate on inflorescence, subsessile or proximally with petioles 1–1.5 mm;

blade ovate proximally to lanceolate or narrowly elliptic distally, 0.5–4.7 × 0.2–1.4 cm, base rounded to cuneate, margins subentire proximally to denticulate distally, 8–20 teeth per side, veins inconspicuous, 3–6 per side, apex obtuse to subacute, surfaces mostly glabrous 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.

usually nodding in bud, erect later, open racemes, sometimes congested, usually mixed strigillose and glandular puberulent, rarely also mixed villous, or rarely subglabrous.

erect racemes, rarely branched, densely strigillose.

erect;

buds 2–5 × 1–2 mm;

pedicel 3–8 mm;

floral tube 0.5–1.7 × 0.8–1.6 mm, with slightly raised ring of spreading hairs at mouth inside;

sepals green, 1.2–2.8 × 0.5–1 mm, abaxial surface subglabrous or sparsely glandular puberulent;

petals white, often fading pink, 1.6–5.5 × 1.2–3 mm, apical notch 0.3–1.2 mm;

filaments white or cream, those of longer stamens 0.6–2.5 mm, those of shorter ones 0.4–1.5 mm;

anthers cream, 0.2–0.9 × 0.2–0.5 mm;

ovary 10–14 mm, strigillose and glandular puberulent or subglabrous;

style cream, 0.8–5 mm, stigma clavate, entire, 0.4–1.2 × 0.3–0.7 mm, usually surrounded by, rarely exserted beyond, 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.

very narrowly cylindrical, (15–)24–60 mm, surfaces usually subglabrous to mixed strigillose and glandular puberulent, rarely sparsely villous;

pedicel 8–40 mm.

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

pedicel 5–16 mm.

narrowly fusiform to narrowly obovoid, 1.1–1.6 × 0.4–0.6 mm, chalazal collar ± conspicuous, 0.05–0.2 mm, light brown, surface papillose;

coma easily detached, white, 3–6 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.