OregonFlora species comparison

1–many, branched from bases, tomentose.

simple or sparsely branched, thinly tomentose to glabrate.

tomentose and scabrous to bristly, bases decurrent;

basal and lower cauline blades often absent at maturity, 5–15 cm, pinnately dissected or lobed;

petioles winged; upper cauline blades oblong to linear, 1–10 cm;

margins entire or slightly dentate, sessile.

thinly villous or tomentose to glabrate;

basal and lower cauline blades ovate to oblong or oblanceolate, 10–30 cm; > 1 cm wide;

margins entire to shallowly dentate or pinnately lobed;

petioles winged; upper cauline blades ovate to oblong or lanceolate, gradually smaller, decurrent;

margins entire or minutely dentate, sessile.

cyme-like clusters or heads solitary.

few-headed corymb-like arrays.

ovoid, 10–15 mm.

campanulate, 20–25 mm.

yellow, sterile florets ? fertile florets, fertile florets 13–20 mm.

sterile florets 25–45 mm, blue, rarely white, pink, or purple, fertile florets 20–30 mm, purple;

anthers dark purple.

outer ovate;

bodies green, palmately spiny;

central spines stout, 10–25 mm; straw-colored; inner with smaller hyaline appendages.

outer lanceolate to ovate, green;

margins scarious with comb-like fringe; appendages not obscuring phyllary bodies, brown to black; inner occasionally without appendages.

dimorphic; outer 2–3 mm, dark brown, glabrous;

pappi 0; inner light brown or mottled, pappi of white bristles, 2–4 mm.

5–6 mm, brown to white with slightly appressed hairs, pappi of bristles, 0.5–1.5 mm.

disciform, pedunculate.

± radiate, pedunculate or sessile.

=16.