Flora of North America species comparison

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

1–5+, erect, unarmed, tomentose to glabrescent.

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

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

primaries linear-subulate, 5–20+ mm, floccose, sometimes glabrate;

secondaries linear-filiform, 3–15 mm.

4–15 mm.

3–15 mm.

turbinate to campanulate, 7–9 mm.

turbinate, 7–10 mm.

5–7;

corollas pale yellow, 7.5–9 mm.

4;

corollas cream to bright yellow, 9–10 mm.

5, ovate.

4, lanceolate to obovate.

1–3 (in axils of spines).

3–7.

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

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

3–5 mm, hirsute;

pappi of 100–130 (distally dilated) bristles 6–8 mm.

= 120.