Flora of North America species comparison

erect, strict, terete, 4–55 cm, simple or well branched in age, subglabrous proximally to mixed strigillose and glandular puberulent distally, with raised strigillose lines decurrent from margins of petioles.

erect, simple or loosely clustered, terete, 15–95 cm, often well branched distally, densely villous throughout, sometimes mixed glandular puberulent distally, decurrent lines absent.

opposite proximal to inflorescence, alternate and reduced distally, often ± appressed, usually subsessile, rarely petiole 1–3 mm, often clasping;

blade obovate proximally to ovate, lanceolate, or narrowly elliptic distally, 1–5.5(–6.5) × 0.4–2(–2.4) cm, base rounded or obtuse, margins low denticulate, 9–30 teeth per side, veins ± conspicuous, 3–6 per side, apex subacute, surfaces subglabrous with strigillose margins;

bracts much reduced.

opposite proximally, alternate and often fasciculate distally, subsessile;

blade oblong-lanceolate to sublinear, 2–4.5 × 0.3–0.9 cm, ± exceeding internodes, base cuneate, margins entire or denticulate, 3–6 inconspicuous teeth per side, sometimes revolute, veins apparent on abaxial side, 3–5 per side, apex acute, surfaces villous, especially distally;

bracts somewhat reduced.

erect, sometimes nodding in bud, racemes, sometimes sparsely branched.

erect racemes, branched or not, densely villous, sometimes mixed glandular puberulent.

erect;

buds 2–3.5 × 1.8–2.5 mm;

pedicel 0–1 mm;

floral tube 0.8–1.4 × 0.8–1.9 mm, ring of sparse spreading hairs at mouth inside;

sepals sometimes flushed red, 1.2–3.5 × 0.6–1.4 mm, abaxial surface strigillose and sometimes mixed glandular puberulent;

petals usually white, infrequently pink, 2.2–5(–7) × 1.7–3.2 mm, apical notch 0.4–1.5 mm;

filaments usually cream, rarely light pink, those of longer stamens 2–3.5 mm, those of shorter ones 1–2 mm;

anthers cream to light yellow, 0.3–0.8 × 0.3–0.5 mm;

ovary 9–30 mm, densely strigillose and glandular puberulent;

style cream or yellow, 1.6–2.8 mm, stigma usually narrowly to broadly clavate, rarely subcapitate, 1–3 × 0.8–2 mm, surrounded by at least longer anthers.

erect;

buds 2.5–5 × 1.5–1.5 mm;

pedicel 3–8 mm;

floral tube 1–1.8 ×1–2 mm, ring of spreading hairs at mouth inside;

sepals 2–4.5 × 1–1.3 mm, abaxial surface villous and glandular puberulent;

petals light to dark pink, obcordate, 4–6 × 2–3 mm, apical notch 1–1.5 mm;

filaments pink, those of longer stamens 2–3.5 mm, those of shorter ones 1–2 mm;

anthers cream, 0.5–0.8 × 0.4–0.6 mm;

ovary 12–20 mm, densely villous, often mixed glandular puberulent;

style cream, 2–3.5 mm, stigma narrowly clavate, entire, 1–1.6 × 0.5–1 mm, surrounded by anthers.

30–55(–70) mm, surfaces mixed strigillose and glandular puberulent; usually subsessile, rarely pedicel 1–5 mm, often appressed to stem.

35–68 mm, short-beaked, surfaces densely villous, sometimes mixed glandular puberulent;

pedicel 5–15 mm.

very narrowly obovoid, 1–1.6(–1.8) × 0.4–0.6 mm, chalazal collar 0.1–0.2 mm, light brown or gray, surface rugose to papillose;

coma usually readily detached, white, 3–9 mm.

narrowly fusiform to narrowly obovoid, 1.5–2 × 0.5–0.6 mm, chalazal collar inconspicuous, 0.1 mm, surface low papillose;

coma persistent, dingy white, 6–8 mm.

= 36.

= 36.