Publication: Brittonia. 23: 370. 1971.
Origin: Native
selected vouchers: WTU
Notes: FNA3: "The name Clematis columbiana was formerly misapplied to C. occidentalis var. grosseserrata ; it is still associated with that taxon in some horticultural and popular publications. In such works, true C . columbiana is usually called C. pseudoalpina."
Not in H&C.
References: (none)