OregonFlora species comparison

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

usually 1, sparsely to densely arachnoid-villous, often also tomentose to glabrate.

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.

oblanceolate to elliptic, 10–40(50) × 3–12 cm;

margins 1–2-pinnate;

spines 2–7 mm;

surfaces glabrate to arachnoid-tomentose; abaxial veins prominent; straw-colored;

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

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

ovoid to hemispheric or campanulate, 1.5–3.5 × 1.5–5 cm, glabrate to thinly tomentose.

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 20–38 mm, cream-colored to purple;

tubes 8–15 mm;

throats 5.5–12 mm;

lobes 5.5–7 mm;

style tips 4–6(7) mm.

subequal to strongly imbricate, sometimes with inconspicuous glutinous ridges;

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

with glutinous ridges;

tips ascending to spreading;

spines fine, 2–4 mm.

4.5–5.5 mm, tan to dark brown;

pappi 12–25 mm.

5–8 mm; light to dark brown;

pappi 15–25 mm.

few–many.

1–few.