Flora of North America species comparison

erect, simple to loosely clustered, terete, 15–95 cm, simple to well branched, densely strigillose, often mixed glandular puberulent on inflorescence, rarely with faint strigillose lines decurrent from margins of petioles.

single or many, suberect or nodding in bud, often clumped, terete, (2–)5–18 cm, rarely branched, subglabrous proximal to inflorescence with raised strigillose lines decurrent from margins of petioles, strigillose distally.

opposite proximally, usually alternate, rarely fasciculate distally, subsessile;

blade linear to very narrowly elliptic or sublanceolate, 2–7.5 × 0.1–0.7 cm, usually longer than internodes, base rounded to subcuneate, margins subentire, 4–7 inconspicuous teeth per side, sometimes revolute, lateral veins inconspicuous, apex obtuse proximally to acute distally, both surfaces densely strigillose, increasing distally;

bracts not much reduced.

opposite proximally, alternate on inflorescence, subsessile;

blade obovate to narrowly elliptic to distally sublinear, 0.8–2.1 × 0.2–0.5 cm, base cuneate to attenuate, margins subentire to minutely denticulate, 2–5 low teeth per side, veins inconspicuous, apex obtuse to truncate, surfaces glabrous or sparsely strigillose on abaxial midrib;

bracts reduced and narrower.

erect racemes, densely strigillose, often mixed sparsely glandular puberulent.

often nodding in bud, erect later, few-flowered racemes, subglabrous or sparsely strigillose.

erect;

buds 3–5 × 1.5–2.5 mm;

pedicel 5–12 mm;

floral tube 0.8–1.5 × 1.2–1.8 mm, ring of spreading hairs at mouth inside;

sepals 2.5–4.5 × 0.9–1.3 mm, abaxial surface strigillose;

petals obcordate, white to light pink, 3.5–7 × 1.6–4 mm, apical notch 1–1.8 mm;

filaments white or cream, those of longer stamens 0.8–3.5 mm, those of shorter ones 0.6–2.5 mm;

anthers cream, 0.5–0.9 × 0.4–0.6 mm;

ovary 12–18 mm, densely strigillose, sometimes mixed glandular puberulent;

style cream, 2–3.8 mm, stigma narrowly clavate, entire, 1–1.8 × 0.5–1.2 mm, usually surrounded by, rarely exserted beyond, anthers.

nodding to suberect;

buds 2–5 × 1–2.5 mm;

pedicel 6–12(–18) mm, exceeding subtending bracts;

floral tube 0.5–1.1 × 0.6–1.3 mm, with or without sparse ring of hairs at mouth inside;

sepals green or flushed purple, 1.1–1.8 × 0.6–1.2 mm;

petals white, sometimes flushed pink, 2.2–4.5 × 1.4–2.5 mm, apical notch 0.5–0.7 mm;

filaments white or light pink, those of longer stamens 4–5 mm, those of shorter ones 2–3 mm;

anthers cream, 0.3–0.4 × 0.2–0.3 mm;

ovary 8–18 mm, subglabrous to strigillose;

style white, 2.5–3.5mm, stigma clavate, 1–1.8 × 0.5–1 mm, surrounded by anthers.

straight, narrowly cylindrical, 35–80 mm, surfaces densely strigillose;

pedicel 10–35 mm.

erect, often reddish purple, 20–42 mm, surfaces sparsely strigillose;

pedicel 25–40 mm.

narrowly fusiform to narrowly obovoid, 1.5–2.2 ×0.5–0.7 mm, chalazal collar 0.1–0.2 mm, ± pronounced, surface papillose;

coma persistent, dingy white, 6–8 mm.

narrowly fusiform to narrowly obovoid, 1.1–1.7 × 0.3–0.5 mm, with distinct chalazal collar 0.1–0.2 mm, light brown, surface rugose or reticulate;

coma persistent, dull white, 5–7 mm.

= 36.

= 36.