Flora of North America species comparison

greenish, much branched, strigillose.

greenish, becoming yellowish to purplish, unbranched or sparingly branched distal to bases, hirsute to strigose or scabrous.

blades 1- or 3-nerved (some larger leaves), linear, 10–30 × 2–3 mm, strigose to scabrous.

blades 3–5-nerved, ovate to oblong, mostly 60–100 × 20–60 mm, scabrellous to glabrate.

to 11 mm.

to 85 mm.

narrowly campanulate to cylindric, 5–8 × 5–8 mm.

± hemispheric or broader, 10–15 × 5–25 mm.

3–6;

corollas bright yellow, laminae ovate to orbiculate, mostly 10–18 mm.

8–21 (more in “double” cultivars);

corollas usually red (white, yellow, or purple in cultivars), laminae spatulate to obovate, 10–35 mm.

18–24;

corollas red or green, to 10 mm, lobes 1 mm.

100–150+;

corollas yellow, 7–9 mm, lobes 1–2.5 mm.

oblong, often becoming scarious, glabrous or appressed-hairy distally, apices obtuse, erose-ciliate (red-tipped).

obovate, becoming scarious, glabrous or sparsely hairy, apices rounded, erose or fimbriate.

4–5 mm, 3-angled (ray) or angular or compressed (disc), ribbed, scabrellous;

pappi 0 or of (1–)2(–4) unequal awns.

6–10 mm, 3-angled (ray) or ± compressed (disc), not or faintly ribbed, ciliolate;

pappi 0.

yellowish (often red-tipped), apices obtuse, erose.

red to purple, apices rounded to acute, fimbriate.

= 42.

= 24.