Flora of North America species comparison

erect or ascending, terete, 4–150 cm, simple or branched with strong central axis, proximal branches ascending or suberect, villous or strigillose, often mixed glandular puberulent distally.

erect, subterete, (20–)40–85(–120) cm, freely branched distally, subglabrous proximal to inflorescence, often with raised strigillose lines decurrent from petioles, densely strigillose distally.

opposite and often early-deciduous proximally, alternate and crowded distally, usually subsessile, rarely petiole 1–2 mm, blade usually narrowly lanceolate to sublinear, rarely to lanceolate, 1.4–7.5(–9.2) × 0.5–1.4 cm, base cuneate to attenuate, margins remotely to sharply serrulate, 5–12 teeth per side, lateral veins obscure, 2–5 per side, apex acute, surfaces densely villous and/or strigillose;

bracts broader than cauline leaves, broadly lanceolate to ovate or subrotund, 0.5–2.5 × 0.3–1.8 cm, long-acuminate, sometimes folded on midrib.

opposite proximal to inflorescence, alternate distally, petiole 4–10 mm;

blade narrowly lanceolate to lanceolate or narrowly elliptic, 3–10(–15) × 0.5–3 cm, subequal to internodes, base rounded to cuneate, margins sharply and irregularly serrulate, 30–75 teeth per side, veins prominent, often raised abaxially, 10–25 per side, apex acute or acuminate, surfaces subglabrous with strigillose margins and abaxial veins;

bracts abruptly reduced.

erect spikes, congested, simple, densely villous and strigillose, sometimes mixed glandular puberulent.

usually upright panicles, sometimes corymbiform, rarely racemes, densely strigillose.

erect, often hidden within subtending bracts, usually chasmogamous;

buds sessile, narrowly elongate, 2–4 mm;

floral tube 1.3–3.8 × 1–2.2 mm, ring of hairs 0.6–2 mm distal to base inside;

sepals 2–7.5 × 0.5–2.2 mm, apex acute;

petals rose-purple, magenta, pink, or white, 3–9.5(–11.5) × 1.2–5(–6.2) mm, apical notch 0.8–3.8 mm;

filaments dark pink, those of longer stamens 1.5–4.5 mm, those of shorter ones 0.5–1.9 mm;

anthers yellow, 0.5–1.2 × 0.3–0.7 mm;

ovary 2–5 mm, densely villous, often mixed glandular puberulent;

style white, 2.2–5.5(–7.5) mm, glabrous, stigma subcapitate to irregularly 4-lobed, 0.3–0.8 × 0.3–1 mm, surrounded by longer anthers.

erect;

buds 2–3 × 1.5–2.5 mm;

pedicel 5–10 mm;

floral tube 0.3–0.6 × 0.3–0.5 mm, raised ring of sparse spreading hairs at mouth inside;

sepals 1.3–3.2 × 0.5–1.5 mm, abaxial surface strigillose;

petals white, 2.5–5.5 × 2–3.8 mm, apical notch 0.5–1 mm;

filaments white, those of longer stamens 1.8–2.5 mm, those of shorter ones 1.5–2 mm;

anthers pale yellow, 0.3–0.4 × 0.2–0.4 mm;

ovary 15–30 mm, ± densely strigillose;

style erect, white, 1.5–2.8 mm, glabrous, stigma cylindrical to subcapitate, entire, 1–1.5 × 0.8–1.2 mm, surrounded by longer anthers.

cylindrical to subfusiform, 4–11 mm, beak to 0.5 mm, central column persistent, surfaces densely villous;

subsessile or pedicel 1–2.5 mm.

40–65 mm, surfaces strigillose;

pedicel 8–12 mm.

3–8 per locule, irregularly angular-fusiform, 1.2–1.6(–1.9) × 0.4–1 mm, without a chalazal collar, light brown, surface irregularly reticulate with raised cells.

narrowly oblanceoloid, 1.2–1.7 × 0.3–0.5 mm, abruptly rounded with very short chalazal neck, brownish gray, surface evenly papillose;

coma not easily detached, cinnamon red, 8–12 mm.

= 20.

= 36.