Howell's Aconite, Howell's Monkshood: Aconitum columbianum ssp. viviparum (Synonyms: Aconitum bulbiferum, Aconitum howellii, Aconitum viviparum)
Columbia Aconite, Columbia Monkshood: Aconitum columbianum ssp. columbianum (Synonyms: Aconitum columbianum ssp. pallidum, Aconitum columbianum var. bakeri, Aconitum columbianum var. columbianum, Aconitum columbianum var. ochroleucum, Aconitum columbianum var. pallidum, Aconitum geranioides, Aconitum leibergii, Aconitum mogollonicum)