Flora of North America species comparison

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

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

primaries forming straight or recurved spines, 5–25 mm;

secondaries spatulate, 10–20 mm, tomentose to nearly glabrous.

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

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

2–12 mm.

3–15 mm.

turbinate to cylindric, 6–9 mm.

turbinate, 7–10 mm.

4;

corollas bright yellow, 8–10 mm.

4;

corollas cream to yellow, 9–10 mm.

4, oblong.

4, lanceolate to obovate.

4–6.

3–7.

4–6 mm, densely hirsute;

pappi of 75–100 bristles 9–10 mm.

2.5–3.5 mm, hirsute;

pappi of 100–130 bristles 6–8 mm.

= 60.

= 60, 62, 120, 180.