OregonFlora species comparison

up to 35 cm, tomentose; from single taproot.

forming clumps, 23–62 cm, green, sparsely villous-hirsute; more densely so below heads.

lanceolate-oblong, 1-pinnately divided;

pinnae toothed, with teeth only on lower margins;

surfaces tomentose;

basal leaves in 1–few rosettes;

blades 12–22 × 6–8 cm;

pinnae 10–36 mm wide;

petioles 7–20 cm;

cauline blades 1.5–5 × 0.3–0.9 cm;

petioles 6–9 cm.

simple;

margins entire to slightly crenate;

surfaces hirsutulous to hirsute;

basal leaves in multiple rosettes;

blades deltate, 7–30 × 4.7–16 cm, bases cordate to hastate;

petioles 7.5–36 cm;

cauline proximal pair generally opposite, lanceolate;

distal alternate;

blades tapering at both ends, 2.5–8.2 × 0.4–2.8 cm;

petioles 0–7.5 cm.

with 1 terminal head.

with 1 larger; terminal head and 1–6 smaller; axillary heads;

peduncles 0–20.5 cm.

14–18 × 25–30 mm.

terminal 9–15 × 15–25 mm; axillary 9–13 × 6–12 mm.

14–16, yellow;

rays 35–40 × 8–11 mm.

8–20 on large heads, 5–9 on small heads, yellow, persistent after drying;

rays 18–26 × 5–11 mm.

~9 mm.

6.5–8.5 mm.

ovate-lanceolate, 20–25 × 5–6 mm;

tips acuminate, tomentose.

ovate-lanceolate, 8–34 × 4–7 mm; outer often tapered to caudate or with acuminate tips, villous to tomentose.

8–9 mm, glabrous.

5.5–7.5 × 2–2.5 mm, generally strigillose, sometimes glabrous.

10–12 mm.

11–13 mm.

=100 ± 2.

=38.