Flora of North America species comparison

blades simple or 1(–2)-pinnately lobed, terminal lobes filiform, 0.5–1(–1.5) mm wide.

mostly basal, seldom cauline; mostly alternate, sometimes opposite;

blades simple or 1–2-pinnately lobed.

5–15(–30+) cm.

(5–)8(–12+);

laminae 7–10(–15+) mm.

(5–)8(–12+), pistillate, fertile;

laminae yellow, ± obovate or flabellate, each broadest distal to middle, apices entire or 2–3-toothed.

20–60(–100+);

corollas 2–3.6 mm.

8–60(–100+);

corollas yellow (to orange), lobes 5;

style-branch apices ± truncate or deltoid.

5–8, obovate to oblanceolate, 4–6(–7+) mm.

5–8.

of (3–)5–8 linear bractlets 3–7+ mm, not ciliolate near bases.

of (3–)5–8 bractlets.

± oblong, (2.5–)3–4+ mm, marked adaxially with red dots or dashes, wings corky-thickened, faces ± tuberculate and/or hirtellous.

± oblong to spatulate, wings ± corky to chartaceous, entire, ± spreading, not ciliolate, faces smooth or ± tuberculate;

pappi 0 or coroniform (0.1–0.2 mm).

oblong or lanceolate to linear.

= 12.

= 24.