Flora of North America species comparison

erect to ascending, often clumped, terete, 25–120(–250) cm, unusually thick, 3–9 mm diam., well branched mainly in distal 1/2, densely long-villous throughout, usually mixed glandular puberulent distally, rarely sparsely villous or densely white-tomentose.

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.

opposite proximal to inflorescence, alternate distally, sessile and ± clasping stem;

blade elliptic-lanceolate to narrowly obovate or elliptic, 4–12(–23) × 0.3–4(–5) cm, base cuneate to attenuate, margins serrulate, 15–50 teeth per side, veins 6–9 per side, apex acute to acuminate or obtuse proximally, surfaces ± densely villous;

bracts moderately reduced.

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.

erect racemes or panicles, usually densely villous and glandular puberulent, rarely tomentose.

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

erect;

buds 5–9 × 1.8–4.5 mm, sometimes beaked;

pedicel 3–11 mm;

floral tube 1.3–2.9 × 2.2–4 mm, conspicuous ring of spreading hairs near mouth inside;

sepals oblong-linear, often keeled, 6–12 × 1–3 mm, abaxial surface densely pubescent;

petals bright pink to rose-purple, rarely white, broadly obcordate, 9–20 × 7–15 mm, apical notch 1–3 mm;

filaments white or pink, those of longer stamens 5–10 mm, those of shorter ones 2.5–6 mm;

anthers cream, 1.5–3 × 0.6–1.2 mm;

ovary 15–34 mm, densely villous and glandular puberulent;

style white or pink, 5–12 mm, usually glabrous, stigma deeply 4-lobed, 1.8–2.2 × 3–5.5 mm, lobes recurved or spreading, exserted beyond anthers.

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.

often flushed purple, 25–90 mm, surfaces usually densely villous and glandular puberulent, rarely glabrescent;

pedicel 5–20 mm.

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

pedicel 8–40 mm.

narrowly obovoid, 0.8–1.2 × 0.3–0.6 mm, chalazal collar inconspicuous, dark brown, surface coarsely papillose;

coma easily detached, tawny or dull white, 7–10 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.

= 36.

= 36.