Flora of North America species comparison

1–5+, erect or spreading, spiny, evenly pannose.

1–5+, erect, spiny, pannose but for tomentose to glabrescent streaks.

primaries forming straight, ± squarrose spines, 10–50 mm;

secondaries filiform to clavate, 2–12(–20) mm, sparsely arachnose or glabrous.

primaries forming straight, ascending spines, 20–30 mm;

secondaries oblanceolate to spatulate, 10–30 mm, tomentose to sericeous.

4–15 mm.

5–12 mm.

turbinate to campanulate, 7–9 mm.

turbinate, 8–10 mm.

5–7;

corollas pale yellow, 7.5–9 mm.

4–5;

corollas pale yellow, 10–12 mm.

5, ovate.

4–5, narrowly ovate.

1–3 (in axils of spines).

4–7.

4.5–5.5 mm, densely pilose (hairs 6–14 mm);

pappi of ca. 25, subulate to setiform scales 6–7.5 mm.

5–8 mm, densely pilose or villous;

pappi of 100–150 bristles 9–12 mm.

= 60.