About Scoliopus hallii S.Watson
Scoliopus hallii, commonly known as the Oregon fetid adderstongue, is a plant species that is endemic to western Oregon. This species is closely related to Scoliopus bigelovii, the California fetid adderstongue. It differs from S. bigelovii in its flower appearance: Scoliopus hallii produces yellow flowers marked with thin purple stripes, while S. bigelovii has purple flowers marked with yellow stripes.