Flora of North America species comparison

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

1–5+, erect (wandlike), unarmed, evenly pannose.

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

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

primaries lance-linear, stiff, pungent, not spinose, 20–60 (× 2–5) mm, tomentose;

secondaries (seldom present) spatulate, 8–15 mm, tomentose.

2–12 mm.

3–8 mm.

turbinate to cylindric, 6–9 mm.

hemispheric, 8 mm.

4;

corollas bright yellow, 8–10 mm.

5–9;

corollas yellow to brownish, 8–9 mm.

4, oblong.

5–6, oblanceolate.

4–6.

3–6.

4–6 mm, densely hirsute;

pappi of 75–100 bristles 9–10 mm.

ca. 4 mm, copiously pilose (hairs 6–10 mm);

pappi 0.

= 60.

= 60.