(Senecio integerrimus var. exaltatus)
There are three varieties:
1)Senecio integerrimus var. vaseyi: Flower heads discoid. It may be found from the Cascade and Wenatchee Mts. of central Washington and possibly south through the Cascades to California.
2)Senecio integerrimus var. exaltatus: Flower heads yellow with both disk and ray flowers. The basal leaves tend to oblanceolate or elliptic in shape. It may be found east of the Cascade crest in dry woodlands and prairies from northern Washington south to the Columbia River gorge and possibly south to California. It is found eastward through Washington and Oregon to northern Idaho and Montana.
3)Senecio integerrimus var. ochroleucus: Flower heads white or creamy colored. The basal leaves tend to be deltoid or subcordate. (See lower photo.) It may be found in open areas across the range of the species.
(from Paul Slichter web site)