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.

many, erect or ascending, often densely clumped, slender, terete, 5–75(–85) cm, simple or distally branched, glabrous and glaucous, sometimes strigillose and/or mixed glandular puberulent distally, rarely with faint raised strigillose lines decurrent from margins of distal petioles.

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 and crowded proximal to inflorescence, alternate and widely spaced distally, subsessile and ± clasping;

blade light green or blue-green, very narrowly lanceolate to narrowly ovate or elliptic, (0.5–)1–7.2 × (0.3–)0.5–1.8 cm, base cuneate, margins subentire or faintly denticulate, 8–15 teeth per side, veins inconspicuous, 3–6 per side, apex obtuse proximally to acute distally, glabrous and glaucous;

bracts much reduced and narrower.

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

erect racemes, glabrous or ± sparsely glandular puberulent, sometimes mixed strigillose.

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 2.5–5 × 2–3.5 mm;

pedicel 2–11(–20) mm;

floral tube 0.7–2.3 × 1–2.5 mm, ring of spreading hairs at mouth inside or without a ring;

sepals often red-tipped, sometimes keeled, 2.5–7.5 × 0.8–2 mm, abaxial surface glabrous or strigillose and/or glandular puberulent;

petals usually light pink to rose-purple, rarely white, 3.4–10(–12) × 1.8–5 mm, apical notch 0.5–3 mm;

filaments purple to white or cream, those of longer stamens 2.4–5(–6) mm, those of shorter ones 1.4–4 mm;

anthers light yellow, 0.5–1.2(–1.5) × 0.3–0.7 mm;

ovary 10–42 mm, subglabrous to sparsely mixed strigillose and glandular puberulent;

style light yellow or cream, 1.7–5(–7) mm, stigma clavate to subcapitate, 0.8–3 × 0.5–1.2 mm, usually surrounded by, rarely exserted beyond, longer anthers.

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

pedicel 5–20 mm.

15–75 mm, with small protuberance at base, surfaces subglabrous to sparsely mixed strigillose and glandular puberulent;

pedicel 5–18(–25) 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 obovoid, 0.7–1(–1.3) × 0.3–0.5 mm, chalazal collar inconspicuous, light brown or gray, surface coarsely papillose in longitudinal rows;

coma readily detached, white, 4–9 mm.

= 36.