Flora of North America species comparison

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

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.

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

pedicel 5–18(–25) mm.

narrowly obovoid, 0.7–1(–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.