Flora of North America species comparison

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

1–3, erect, white, tomentose (on distal branches, hairs appressed) or glabrate.

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.

basal and cauline, bicolor (white and green);

blades (basal) linear to broadly lanceolate, 3–7(–10) × 2–5(–6) cm, coarsely pinnately lobed (cauline becoming linear distally), faces tomentose (abaxial) or glabrous (adaxial).

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

broadly campanulate, 4–5 × 3.5–4 mm.

pistillate 5–20; functionally staminate 12–30;

corollas pale yellow, sparsely hairy or glabrous.

pistillate 9;

bisexual 25–60;

corollas yellow, 1.5–3 mm, glabrous (style branches included, erect, linear, relatively short, short-ciliate).

(margins scarious) glabrous or villous-tomentose.

(violet-brown) oval (outer) to elliptic or lanceolate, sparsely tomentose.

(pedunculate) in (mostly leafless) paniculiform arrays.

in compact to broadly branched, paniculiform arrays 1–20 × 2–6 cm.

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

oblong-linear (angular), 1.2–1.5 mm, glabrous.

= 18, 36.