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.

several to many, suberect or ascending, terete, 10–40 cm, simple or sparsely branched, usually glabrous and ± glaucous proximal to inflorescence, strigillose distally, sometimes densely strigillose throughout.

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.

crowded distally, petiole 2–6 mm, blade narrowly ovate to ovate or broadly elliptic, often obovate in proximal pairs;

cauline 2–4.5 × 0.8–2 cm, base rounded to attenuate, margins subentire or finely denticulate, 8–12 teeth per side, lateral veins inconspicuous, 3–5 per side, apex obtuse proximally to subacute distally, surfaces glaucous and subglabrous to densely strigillose;

bracts narrower and much smaller.

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

erect racemes, simple, ± densely strigillose, rarely mixed sparsely glandular puberulent.

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 6–11 × 4–5 mm, apiculate;

pedicels 4–8 mm;

floral tube 1–1.8 × 2–3 mm, with raised ring of tissue edged with spreading hairs at mouth inside;

sepals often reddish green, lanceolate, 9.5–14.5 × 2.5–3.5 mm, apex acuminate, abaxial surface densely strigillose;

petals pink to rose-purple, obcordate, 16–20 × 13–16 mm, apical notch 3.4–5.5 mm;

filaments light pink, those of longer stamens 9–14 mm, those of shorter ones 6.5–10 mm;

anthers cream, 1.8–3.5 × 1–1.9 mm;

ovary 6–12 mm, densely strigillose;

style cream to light pink, 14.5–18.5 mm, stigma broadly 4-lobed, 1–1.5 × 3–3.5 mm, exserted beyond anthers.

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

pedicel 5–20 mm.

20–35 mm, surfaces strigillose;

pedicel 9–13 mm, bracts often attached 2–3 mm from base.

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 obovoid, constriction 0.6–0.8 mm from micropylar end, 2.5–3.4 × 0.9–1.4 mm, chalazal collar obscure, light brown, surface papillose;

coma easily detached, white, 6–8 mm.

= 36.

= 36.