Columbia Aconite, Columbia Monkshood, Columbian Monkshood, Monkshood: Aconitum columbianum var. columbianum (Synonyms: Aconitum columbianum ssp. pallidum, Aconitum columbianum var. columbianum, Aconitum columbianum var. ochroleucum, Aconitum columbianum var. pallidum, Aconitum geranioides, Aconitum noveboracense, Aconitum uncinatum ssp. noveboracense) -
Howell's Aconite, Howell's Monkshood: Aconitum columbianum var. viviparum (Synonyms: Aconitum bulbiferum, Aconitum columbianum var. howellii, Aconitum howellii) -