Columbia Clematis: Clematis occidentalis var. dissecta (Synonym: Clematis columbiana var. dissecta)
Columbia Clematis: Clematis occidentalis var. grosseserrata (Synonyms: Atrogene grosseserrata, Clematis occidentalis ssp. grosseserrata)
Western Clematis, Western White Clematis, Western Virgin's Bower: Clematis ligusticifolia (Synonyms: Clematis ligusticifolia var. brevifolia, Clematis ligusticifolia var. ligusticifolia, Clematis neomexicana, Clematis suksdorfii) - Viny plant, occasionally introduced to this habitat. May climb into other plants, shrubs or trees. Sepals white, but reduced in size.
Evergreen Clematis, Old Man's Beard, Traveler's-joy, Traveler's Joy: Clematis vitalba