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.

erect or ascending, terete, 10–25 cm, sparsely branched distally, densely grayish white-strigillose.

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.

subsessile or petioles 0.5–2.5 mm, blade elliptic or narrowly so to lanceolate, often folded along midrib, 0.9–1.8 × 0.3–0.7 cm, usually longer than internodes, base rounded to cuneate, margins subentire or low denticulate, 1–3 low teeth per side, lateral veins inconspicuous, 1–3 per side, apex blunt to acute with conspicuous dark brown mucronate tip, surfaces densely spreading-hairy;

bracts very reduced, attached to pedicel 1–2 mm from base.

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

erect open racemes or panicles, densely spreading-hairy.

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.

erect;

buds 6–8 × 2.5–3.2 mm;

floral tube 5.2–9.5 × 2.4–3.2 mm, constriction 4–6 mm distal to base, base ± bulbous, spreading-hairy from mouth nearly to base inside;

sepals 2.7–4.2 × 1.6–2 mm, abaxial surface densely villous and glandular puberulent;

petals rose-purple, 6–9.5 ×3.8–6.2 mm, apical notch 1.5–2.5 mm;

filaments light pink, those of longer stamens 5–6.5 mm, those of shorter ones 3–3.5 mm;

anthers 1.3–2.1 × 0.6–0.9 mm, apiculate;

ovary 2.5–4.5 mm, densely villous and glandular puberulent;

style pinkish cream, 11–17 mm, glabrous, stigma 4-lobed, 0.8–1 × 1.1–2.1 mm, lobes often not spread and then cuplike, usually exserted beyond anthers.

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

pedicel 10–35 mm.

fusiform, 8–16 mm, surfaces glandular puberulent;

pedicel 2–5 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.

obovoid to broadly so, with slight constriction 0.4–0.6 mm from micropylar end, 1.5–2.4 × 0.8–1.3 mm, inconspicuous chalazal collar, dark brown, surface papillose;

coma easily detached, dingy white, 6.5–7.5 mm.

= 36.

= 30.