Flora of North America species comparison

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

1–3+, erect, unarmed, pannose but for glabrescent streaks.

primaries forming recurved spines, 5–25 mm;

secondaries linear-filiform to spatulate, 3–25 (× 1–2) mm, glabrous or glabrescent.

primaries linear-subulate, ascending to appressed, 5–20 (× 1+) mm, sparsely floccose, sometimes glabrate;

secondaries linear-filiform to clavate, 3–15 mm, glabrous.

5–30 mm.

3–15 mm.

hemispheric, 8–12 mm.

turbinate, 7–10 mm.

5–8;

corollas pale to bright yellow, 6–10 mm.

4;

corollas cream to yellow, 9–10 mm.

4–6, oblong to ovate.

4, lanceolate to obovate.

1–2 (in axils of spines).

3–7.

6–8 mm, copiously pilose (hairs 9–12 mm);

pappi of ca. 25, subulate scales 6–9 mm.

2.5–3.5 mm, hirsute;

pappi of 100–130 bristles 6–8 mm.

= 60.

= 60, 62, 120, 180.