Flora of North America species comparison

erect, green or tan to reddish green, terete, (3–)10–120(–190) cm, often thick, well branched or simple, subglabrous proximal to inflorescence with raised strigillose lines decurrent from margins of petioles, ± densely mixed strigillose and glandular puberulent distally, rarely densely strigillose or densely villous throughout.

several to many, ascending or erect, terete, loosely clumped, 40–100 cm, usually well-branched apically, ± glabrous and glaucous proximal to inflorescence, without distinct raised lines, sparsely mixed strigillose and glandular pubescent proximally.

opposite proximal to inflorescence, alternate distally, petiole 0–5(–10) mm, often subsessile distally, sometimes clasping;

blade narrowly obovate, obovate, broadly elliptic, or spatulate proximally, to very narrowly lanceolate to ovateor broadly elliptic distally, (1–)3–12(–16) × (0.2–)0.6–5.5 cm, base rounded to cuneate or short-attenuate, margins serrulate, (8–)15–40 irregular teeth per side, veins prominent, 4–10 per side, apex obtuse to acute or subacuminate, surfaces usually subglabrous with strigillose margins, rarely densely strigillose or villous;

bracts scarcely reduced to very reduced and narrower.

opposite proximal to inflorescence, alternate distally, petiole broad, 1–3 mm;

blade narrowly lanceolate to narrowly ovate, 3–9 × 0.7–2.5 cm, base rounded to cuneate, margins finely serrulate, 20–40 teeth per side, veins reddish green, conspicuous, 6–10 per side, apex acute, surfaces glabrous and often glaucous, crowded proximally;

bracts much reduced and narrower.

usually erect, rarely nodding, racemes or panicles, well branched and open, to simple and congested, ± densely strigillose and glandular puberulent.

erect racemes or open panicles, often branched, glandular puberulent, sometimes mixed strigillose.

erect;

buds 1.5–7 × 1–3 mm;

pedicel 2–14(–20) mm;

floral tube 0.5–2.6 × 0.9–3.5 mm, ring of spreading hairs at mouth inside;

sepals often reddish green, lanceolate, sometimes keeled, 2–7.5 × 0.7–2.5 mm;

petals white or pink to rose-purple, obovate, 2–14 × 1.3–6.3 mm, apical notch 0.4–2.5 mm;

filaments white to dark pink, those of longer stamens 1.4–7 mm, those of shorter ones 0.6–5.2 mm;

anthers light yellow to cream, 0.5–1.8 × 0.3–0.9 mm;

ovary often reddish green, 8–40 mm, ± densely mixed strigillose and glandular pubescent;

style cream to light yellow, 1.1–8.5 mm, stigma cream to orange-yellow, narrowly to broadly clavate or subcapitate, 0.8–2.8 × 0.4–1.2 mm, rarely indented apically, usually surrounded by, rarely exserted beyond, anthers.

erect;

buds 5–8 × 2–3.5 mm, often with stigma exserted;

pedicel 2–4 mm;

floral tube 2–3 × 1.8–3 mm, with ring of spreading hairs near base of tube inside;

sepals often flushed red, 6–10 × 2.1–2.8 mm, abaxial surface mixed strigillose and glandular puberulent;

petals dark pink to rose-purple, (6–)10–15 × 4.5–6 mm, apical notch 2.6–3 mm;

filaments cream or light pink, those of longer stamens 6–8 mm, those of shorter ones 3.5–4.5 mm;

anthers cream or yellow, 1–1.2 × 0.5–0.6 mm;

ovary 20–25 mm, densely glandular puberulent and mixed strigillose;

style cream or yellow, 9–13 mm, stigma broadly and sometimes irregularly 4-lobed, 1–1.5 × 2.1–2.9 mm, exserted beyond anthers.

erect, (15–)30–100 mm, surfaces usually strigillose and glandular puberulent, rarely glabrescent;

pedicel 2–15(–40) mm, rarely subsessile.

25–45 mm, surfaces mixed sparsely glandular puberulent and strigillose, often with reduced fertile seed set;

pedicel 3–6 mm.

narrowly obovoid or subfusiform, (0.6–)0.8–1.6(–1.9) × 0.3–0.6 mm, chalazal collar ± conspicuous, 0.1–0.3 × 0.2–0.4 mm, grayish tan to brown, surface with conspicuous parallel longitudinal ridges of laterally flattened papillae;

coma readily detached, white or dingy white, 2–8 mm, very rarely absent.

narrowly obovoid, 0.9–1.3 × 0.4–0.5 mm, chalazal collar 0.1–0.15 × 0.2–0.25 mm, gray-brown, surface with conspicuous parallel longitudinal ridges of laterally flattened papillae;

coma readily detached, white, 4–6 mm.

= 36.

= 36.