Flora of North America species comparison

usually 1–5, turning reddish brown, (often ribbed) tomentose or glabrous.

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

persistent or deciduous, mostly basal;

basal blades 4–12 cm;

cauline gradually reduced, 2–4 × 0.5–1.5 cm, 2–3-pinnately lobed, lobes linear to narrowly oblong, apices acute, faces densely to sparsely white-pubescent.

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).

broadly turbinate, 2.5–3(–5) × 2–3.5(–7) mm.

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

pistillate 5–20; functionally staminate 12–30;

corollas pale yellow, sparsely hairy or glabrous.

pistillate 3–8;

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

corollas bright yellow, 1.3–2.2 mm, glandular.

(margins scarious) glabrous or villous-tomentose.

broadly ovate, glandular (at least at bases).

(pedunculate) in (mostly leafless) paniculiform arrays.

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

oblong-lanceoloid, somewhat compressed, 0.8–1 mm, faintly nerved, glabrous.

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

= 18.