OregonFlora species comparison

usually 1; slender, arachnoid-villous, sometimes thinly so.

1–several, gray-tomentose.

linear-oblong to elliptic, 7–35 × 1–15 cm;

margins entire to dentate or pinnately lobed;

lobes triangular-ovate to linear;

spines fine, 1–6 mm;

surfaces abaxially thinly to densely tomentose, adaxially glabrate to thinly arachnoid-villous;

basal occasionally present at flowering, sessile, clasping, or petiolate.

elliptic to oblanceolate, 12–45 × 2–10 cm;

margins entire to deeply dentate or pinnately lobed;

spines 2–6 mm;

surfaces abaxially densely white-tomentose, adaxially thinly tomentose to glabrate;

basal usually present at flowering, sessile, clasping, or petiolate.

hemispheric to campanulate, 1–2.5 × 1.5–3.5 cm, glabrous to thinly arachnoid-villous.

hemispheric to campanulate; (1.5)2–3.5 × 2–4 cm.

corollas 16–25 mm, cream-colored to purple;

tubes 6–12 mm;

throats 5–10.5 mm;

lobes 3.5–8 mm;

styles conspicuously exserted;

tips 4–6 mm.

corollas 20–28 mm, white to cream-colored, occasionally lavender-tinged;

tubes 8–13 mm;

throats 7–11 mm;

lobes 4–6 mm;

style tips 5–6 mm.

subequal to strongly imbricate, sometimes with inconspicuous glutinous ridges;

spines 1–6 mm; outer bases ? 2 mm wide.

strongly imbricate, with prominent glutinous ridges;

tips reflexed;

spines fine, 2–5 mm.

4.5–5.5 mm, tan to dark brown;

pappi 12–25 mm.

5–6 mm; straw-colored to light brown;

pappi 28–34 mm.

few–many.

1–few.