OregonFlora species comparison

1, loosely arachnoid-tomentose, or villous, glabrate with age.

mostly basal;

cauline progressively reduced distally; ± petiolate;

basal and lower cauline elliptic, lanceolate, linear, oblanceolate, rounded-deltate, rarely suborbiculate, bases tapered or truncate to cordate;

margins entire or dentate;

distal becoming sessile and bract-like.

ovate to rounded deltate, sometimes obovate to oblanceolate;

basal and proximal cauline distinctly petiolate.

corymb-like arrays;

bracts 0 or inconspicuous.

urn-shaped.

5, rarely 0;

rays 6–15(20) mm, yellow or white to pale yellow.

usually 5;

rays (5)10–15(20) mm, white to pale yellow.

35–45.

(8)13 or 21;

tips usually black, sometimes green.

linear, 7–10 mm;

tips green or minutely black.

1–5+, inconspicuous, usually < 2 mm.

2.5–3 mm, usually glabrous, sometimes hairy along ribs.

6–15(30+).

(3)8–12(40+).

=40, 80.