Flora of North America species comparison

with slender branches from bases, hairy, developing fissured barks.

with slender branches from bases, hairy, developing fissured barks.

cauline;

petioles 2–7 mm;

blades gray-green, narrowly ovate to deltate, 12–25 mm, apices acute or obtuse, faces sparsely canescent and strigose.

cauline;

petioles 6–12 mm;

blades silvery green, ovate to deltate, 25–40 mm, apices acute, faces ± silvery-canescent.

canescent.

canescent.

9–13 mm.

8–14 mm.

11–21;

corolla laminae 8–15 mm.

14–25;

corolla laminae 10–25 mm.

yellow, 5–6 mm.

yellow, 5–6 mm.

narrowly ovate.

ovate.

borne singly.

borne singly.

5–8 mm;

pappi usually 0, rarely of 1–2 bristlelike awns.

5–7 mm;

pappi usually 0, rarely of 1–2 bristlelike awns.

= 36.

= 36.