Flora of North America species comparison

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

1–5+, erect, unarmed, pannose but for floccose or glabrescent streaks.

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

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

primaries lanceolate to spatulate, 5–40 (× 2–6) mm, tomentose to sericeous;

secondaries similar, smaller.

2–12 mm.

5–25 mm.

turbinate to cylindric, 6–9 mm.

turbinate to cylindric, 6–12 mm.

4;

corollas bright yellow, 8–10 mm.

4;

corollas cream to bright yellow, 7–15 mm.

4, oblong.

4, oblong to lanceolate.

4–6.

3–8.

4–6 mm, densely hirsute;

pappi of 75–100 bristles 9–10 mm.

3–5 mm, glabrous or hirsute;

pappi of 100–150 bristles 6–11 mm.

= 60.

= 60, 62, 90, 120.