OregonFlora species comparison

branched above, sparsely tomentose;

gland-dotted.

villous, thinly to densely tomentose;

gland-dotted;

basal and lower cauline blades oblong to oblanceolate, 2–15 cm;

margins dentate, pinnately lobed or entire, petiolate to tapering at base; upper cauline blades linear to oblong, 1–5 cm, bases decurrent;

margins dentate to entire.

1–few in corymb-like arrays or heads solitary.

ovoid, 8–15 mm.

yellow, sterile florets ? fertile florets, fertile florets 10–14 mm.

outer ovate, bases spiny-fringed;

surfaces tomentose to glabrate;

central spines slender, 5–10 mm, often purple; inner entire; acute or spine-tipped.

2.5–3 mm, white or light brown, finely hairy, pappi of unequal, white bristles, 1.5–3 mm.

disciform.

=24.