USDA list two varieties of which one is found in WA state but currently (ITIS) both are combined into a single species with no varieties:
var. careyana: (Carey's Balsamroot) WA, OR
var. intermedia: (Intermediate Balsamroot) OR
east Central Cascades
TRAIL: Ginkgo Petrified Forest
HABITAT: Shrub-steppe
ELEVATION: 280 m (920 ft.)
BLOOM TIME: 04-MAY