OregonFlora species comparison

simple, linear to elliptic-lanceolate, or pinnately compound with 2–6 broadly linear leaflets and a terminal elliptic-lanceolate segment, 4–20 cm;

margins hispid-puberulent;

tips acute;

surfaces villous- or glandular-puberulent.

solitary terminal and axillary heads.

12–30 cm.

hemispheric, 8–14 mm.

8–15;

rays 13–30 mm, yellow;

tips usually 4+-lobed.

corollas 4–7 mm; well exceeding involucres;

stamens yellow.

outer series 50–~100% length of inner series.

2.5–4 mm; black, glabrous, broadly or narrowly winged, pappi of 2 short scales.

=26.