Flora of North America species comparison

erect or ascending, often loosely matted, often flushed purple distally, terete, 8–30(–40) cm, simple or sparsely branched from base, subglabrous.

erect, rarely clumped, terete, 10–40(–45) cm, usually simple, rarely branched, glabrous proximal to inflorescence with sparsely strigillose raised lines decurrent from margins of petioles, mixed strigillose and glandular puberulent distally.

opposite proximal to inflorescence, alternate distally, subsessile;

blade broadly elliptic proximally, narrowly elliptic or lanceolate to sublinear distally, 5–25 × 1–7 mm, longer than internodes proximally to much shorter distally, base cuneate to rounded, margins subentire, veins extremely faint, 3–5 per side, apex obtuse, surfaces subglabrous;

bracts extremely reduced and linear.

opposite and crowded proximal to inflorescence, alternate and scattered distally, subsessile;

blade narrowly oblong or narrowly lanceolate to linear, (1.2–)2–4.5 × 0.1–0.5 cm, base attenuate, margins irregularly denticulate, 2–4 teeth per side, veins inconspicuous, 3 or 4 per side, apex subacute to obtuse or ± truncate, surfaces glabrous with sparsely strigillose margins and adaxial midrib;

bracts much reduced and narrower.

usually erect, sometimes nodding in bud, racemes, open, unbranched, sparsely strigillose and glandular puberulent.

nodding in bud, suberect later, racemes, simple, mixed strigillose and glandular puberulent, sometimes subglabrous.

suberect or nodding;

buds 2–3.5 × 1–1.5 mm, apex blunt;

pedicel 2–7 mm;

floral tube 0.8–1.8 × 1–2.1 mm, with faint ring of hairs at mouth inside;

sepals often flushed purple, 2.5–4.5 × 1–1.6 mm;

petals white to pink, 5–8 × 2.8–4 mm, apical notch 0.8–1.5 mm;

filaments white, those of longer stamens 2.8–4.5 mm, those of shorter ones 2–3.8 mm;

anthers yellow-cream, 0.8–1.2 × 0.4–0.5 mm;

ovary green to purple, 8–14 mm, sparsely strigillose and glandular puberulent;

style white, 3.8–4.8 mm, glabrous, stigma subcapitate, 1–1.4 × 1–1.2 mm, surrounded by longer anthers.

erect, sometimes starting in third most-proximal node;

buds 3–6.5 × 1–2 mm;

pedicel 4–15 mm;

floral tube 0.7–1.6 × 1–2.2 mm, with or often without ring of spreading hairs at mouth inside;

sepals 1.2–3.5 × 0.7–1.2 mm, apex subacute;

petals white, 2–5.5 × 1.2–3.1 mm, apical notch 0.3–1 mm;

filaments white or cream, those of longer stamens 1–2.5 mm, those of shorter ones 0.5–1.4 mm;

anthers cream, 0.4–0.6 × 0.3–0.5 mm;

ovary usually purplish red, 10–20 mm, sparsely mixed strigillose and glandular puberulent or subglabrous;

style cream or white, 0.7–2.5 mm, stigma cylindrical to clavate, entire, 0.8–2 × 0.2–1.2 mm, surrounded by anthers.

slender, often purplish green, 21–40(–52) mm, surfaces subglabrous;

pedicel 20–65 mm.

slender, 30–55 mm, surfaces sparsely strigillose and glandular puberulent;

pedicel 8–38 mm.

narrowlyoblanceoloid or subfusiform, 1–1.4 × 0.4–0.6 mm, chalazal collar 0.1–0.2 mm, light brown, surface low papillose;

coma persistent, whitish, 3–4 mm.

narrowly attenuate, 1.4–2 × 0.3–0.5 mm, chalazal collar conspicuous, 0.1–0.3 mm, light brown or blond, surface papillose;

coma persistent, white, 3–5 mm.

= 36.

= 36.