Flora of North America species comparison

many, ascending, often sigmoidally bent, nodding distally, later erect, clumped or mat-forming, terete, 3–20(–25) cm, simple, subglabrous, sometimes with faint raised strigillose lines decurrent from margins of petioles, rarely mixed strigillose and sparsely glandular puberulent distally.

strict, terete, 5–45 cm, simple to freely branched, subglabrous to strigillose proximally, strigillose and often villous and/or glandular puberulent distally.

opposite and crowded proximal to inflorescence, alternate distally, petioles 1–6 mm, rarely subsessile distally;

blade spatulate to oblong proximally, elliptic to narrowly lanceolate or sublinear distally, (0.5–)0.8–2.5 × 0.3–1 cm, base attenuate to cuneate, margins subentire proximally, sparsely denticulate distally with 2–5 low teeth per side, veins obscure, 2–4 per side, apex obtuse or rounded proximally to subacute distally, surfaces subglabrous;

bracts reduced, usually much narrower.

mostly alternate, often fasciculate distally, petiole 1–12 mm, blade spatulate proximally to narrowly lanceolate or linear distally, usually folded along midrib, 0.5–3 × 0.1–0.7 cm, base long-attenuate, margins subentire or scarcely serrulate, 2–4 remote teeth per side, lateral veins inconspicuous, apex blunt proximally to acute distally, surfaces subglabrous or with scattered short hairs on margins;

bracts much reduced, sometimes attached to pedicel.

nodding in bud, later suberect, few-flowered racemes, subglabrous to sparsely strigillose and/or glandular puberulent.

suberect panicles or racemes, congested distally, with few thin branches, densely strigillose, often sparsely mixed villous and glandular puberulent.

suberect;

buds 2–5 × 1–2 mm;

pedicel 1–6(–15) mm;

floral tube 0.6–1.2 × 0.8–1.8 mm, slightly raised subglabrous ring at mouth inside;

sepals green to reddish purple, 1.5–5 × 0.6–1.5 mm, abaxial surface subglabrous to sparsely glandular;

petals usually pink to rose-purple, rarely white, narrowly obcordate, (1.7–)2.5–6.5(–8) × 1.6–3.5 mm, apical notch 0.5–1.2 mm;

filaments cream to light pink, those of longer stamens 1.4–3.2 mm, those of shorter ones 0.7–2 mm;

anthers 0.3–0.6 × 0.2–0.4 mm;

ovary often reddish purple, 6–20 mm, subglabrous or sparsely strigillose and glandular puberulent;

style white, 1.2–2.5 mm, glabrous, stigma broadly clavate to subcapitate, entire, 0.9–1.5 × 0.4–0.7 mm, surrounded by longer anthers.

erect, often cleistogamous;

buds 1.1–1.9 × 0.8–1.1 mm,often apiculate;

floral tube 0.4–0.8 × 0.5–0.8 mm, with ring of short hairs at mouth inside;

sepals often reddish green, 1.3–2.5 × 0.5–0.7 mm, apex subacute;

petals white,1.4–2.5(–3) × 1–1.8 mm, apical notch 0.5–0.7 mm;

filaments white, those of longer stamens 0.9–1.3 mm, those of shorter ones 0.5–0.7 mm;

anthers 0.3–0.5 × 0.2–0.4 mm, apiculate;

ovary 4–6 mm, strigillose;

style white or cream, 1.2–1.7 mm, stigma subcapitate to obscurely 4-lobed, 0.3–0.4 × 0.4–0.6 mm, surrounded by longer anthers.

slender, often reddish purple, 17–40(–55) mm, surfaces subglabrous or with scattered hairs;

pedicel 5–35(–68) mm.

12–20 mm, surfaces sparsely hairy;

pedicel 2–5 mm.

narrowly obovoid, 0.7–1.4 × 0.3–0.5 mm, inconspicuous chalazal collar 0.1–0.2 mm wide, light brown, surface reticulate (smooth);

coma persistent, dull white, 2–4 mm.

obovoid, with slight constriction 0.2–0.3 mm from micropylar end, 0.6–0.9 × 0.3–0.5 mm, short chalazal collar 0.2–0.3 mm wide, grayish brown, surface low-papillose in ± irregular rows;

coma easily detached, dingy white, 2–2.5 mm.

= 36.

= 32.