Flora of North America species comparison

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

relatively numerous, erect, green to brown or reddish brown, somewhat woody, 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.

proximal blades bright green and glabrous or gray-green and sparsely hairy, 5–8 cm;

cauline blades bright green (gray-green in desert forms), linear, lanceolate, or oblong, 1–7 × 0.1–0.5(–0.9) cm, mostly entire, sometimes irregularly lobed, acute, usually glabrous, sometimes glabrescent (deserts).

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

globose, 2–3 × 2–3.5(–6) mm.

pistillate 5–20; functionally staminate 12–30;

corollas pale yellow, sparsely hairy or glabrous.

pistillate 6–25; functionally staminate 8–20;

corollas pale yellow, 1.8–2 mm, eglandular or sparsely glandular.

(margins scarious) glabrous or villous-tomentose.

(light brown, broadly lanceolate, membranous): margins broadly hyaline, glabrous.

(pedunculate) in (mostly leafless) paniculiform arrays.

in terminal or lateral, leafy, paniculiform arrays 15–45 × 6–30 cm; appearing ball-like on slender, sometimes nodding peduncles.

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

oblong, 0.5–0.8 mm, faintly nerved, glabrous.

= 18.