Much like D. eximea but more robust, the flowers rather broader and the small side sepals deeply crested (those of D. eximea are only somewhat inflated). California to British Columbia, in forests. D.f. 'Alba' has white flowers, 'Rosea' is pink. D.f. subsp. oregana has glaucous leaves and white-tipped pink flowers. Subsp. nevadensis has very finely dissected foliage and creamy to pinkish flowers with a hint of yellow. D. formosa is sometimes confused with D. eximea or its cultivars.
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