Flora of North America species comparison

strict, erect, sometimes reddish green, terete, 3.5–40 cm, simple or freely branched, subglabrous proximally to strigillose and glandular puberulent distally.

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.

alternate distally, not fasciculate, petiole 0–2 mm, blade subspatulate proximally to lanceolate, oblanceolate, or narrowly elliptical distally, not folded along midrib, 0.9–2.5 × 0.2–0.6 cm, shorter than internodes, base tapered, margins entire or scarcely denticulate, 1–4 teeth per side, lateral veins obscure, apex subacute or often blunt proximally, surfaces subglabrous or with scattered hairs along margins;

bracts much reduced, sometimes attached to pedicel.

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 or open panicles, relatively loose and uncrowded, branches thin, mixed strigillose and glandular puberulent.

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

erect or, sometimes, nodding in bud;

buds broadly ovoid, 1.2–2.5 × 1–1.5 mm;

floral tube 1.1–1.5 × 1–1.4 mm, usually with ring of spreading hairs at mouth inside;

sepals 0.5–2.5 × 0.4–1.3 mm, apex acute, abaxial surface strigillose, sometimes mixed glandular puberulent;

petals white to pink, 2–5 × 1.5–3 mm, apical notch 0.2–1.9 mm;

filaments white, those of longer stamens 0.5–3 mm, those of shorter ones 0.3–2 mm;

anthers 0.6–1 × 0.5–0.8 mm;

ovary 4–9 mm, mixed strigillose and glandular puberulent;

style light pink, 1–3.5 mm, stigma subclavate to obscurely 4-lobed, 0.4–0.6 × 0.4–0.5 mm, surrounded by longer 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.

9–28 mm, surfaces strigillose and glandular puberulent;

pedicel 3–10 mm.

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

pedicel 25–40 mm.

obovoid, without constriction, 0.9–1.2 × 0.4–0.6 mm, low chalazal collar 0.1–0.2 mm wide, brown, surface reticulate;

coma easily detached, white, 2.5–3 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.

= 26.

= 36.