Flora of North America species comparison

1–20, erect, brown to gray-green, simple, hairy or glabrescent.

3–20, erect, light brown, simple or branched, glabrous.

cauline, bicolor (white and green to light gray-green);

blades narrowly elliptic to widely oblanceolate, (1–)3–11(–15) × 0.5–2(–6) cm (proximal with 3–5 lateral lobes, distal mostly entire), faces sparsely tomentose (abaxial) to sparsely hairy (adaxial).

cauline, dark green;

blades lanceolate, 1.5–5 × 1–2.5 cm, 2-pinnatifid (primary lobes 5–9, 0.4–1.5 cm; cauline smaller, pinnatifid to entire), faces tomentose (abaxial) or glabrous (adaxial).

narrowly turbinate to campanulate, 2–3 × 2–4 mm.

campanulate to hemispheric, 2.5–3.5 × 2–4.5 mm.

pistillate 6–10;

bisexual 6–25;

corollas pale yellow, 1–1.5 mm, glabrous, sometimes glandular.

pistillate 3–8;

bisexual, sometimes functionally staminate, (15–)20–35;

corollas bright yellow, 1.3–2.2 mm, glandular.

(green to gray) ovate, tomentose to pubescent.

broadly ovate, glandular (at least at bases).

(usually nodding) in (leafy) paniculiform arrays 10–30 × 3–9 cm (branches widely spreading, ascending, stout).

(peduncles 0 or to 3 mm) in usually paniculiform, sometimes racemiform, arrays 5–20 × 1.5–4 cm.

ellipsoid, 0.5–1 mm, glabrous.

(light brown) ellipsoid (± arcuate, ribs 4, prominent), ca. 1 mm, glandular.

= 54.

= 18.