Flora of North America species comparison

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

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

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

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

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

secondaries linear-filiform, 3–15 mm.

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 bright 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.

3–5 mm, hirsute;

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

= 60.

= 120.