OregonFlora species comparison

elliptic in outline, 2–25 × 2–10 cm;

margins usually denticulate, 2-pinnately lobed;

surfaces glabrous or lightly pubescent;

primary lobes in 4–10 pairs; secondary lobes linear to oblanceolate or triangular.

ovate to lanceolate in outline, 2–12 × 1–4 cm;

margins often dentate, 1–2–pinnately lobed;

surfaces glabrous or minutely pilose;

primary lobes in 2–3(4) pairs; secondary lobes ovate to oblanceolate.

3–5 × 5–10 mm.

3–3.5 × 5–12 mm.

15–25; vestigial, yellow.

10–40;

rays 3–6 mm, white.

corollas 1.5–2 mm, yellow.

corollas 1–3 mm, yellow.

with chartaceous margins; inner often membranetipped.

with chartaceous margins; inner not membranetipped.

1–2 mm, brown, 4–5-ribbed, glabrous or gland-dotted;

pappi 0 or of low crowns.

1–2 mm, brown, glabrous, 5–8-ribbed;

pappi 0 or of low crowns.

20–200;

peduncles 2–15 mm, glabrous or villous.

5–25;

peduncles 1–10 cm, glabrous or puberulent.

=18.

=18.