[Clematis and Virgin's Bowers: The Genus Clematis in the Cascade Mountains of Oregon and Washington]
Western Clematis, Western White Clematis, Western Virgin's Bower
Clematis ligusticifolia
Synonyms: Clematis ligusticifolia var. brevifolia, Clematis ligusticifolia var. ligusticifolia, Clematis neomexicana, Clematis suksdorfii

Western clematis from the Corbett Exit from Interstate 84, near Corbett,
OR.....August 1991.
Habitat:
Western clematis is found in sagebrush, ponderosa pine, and mixed forests,
frequently along creek bottoms. It seems to frequently pop up in human disturbed
environments.
Range:
Western clematis is found from southern British Columbia southward along
the east base of the Washington Cascades, then west into the Columbia River
Gorge. It is found on both sides of the Oregon Cascades and may be found as
far south as southern California. It ranges eastward to New Mexico and North
Dakota.
- 
Western clematis from the Corbett Exit from Interstate 84, near Corbett,
OR.....August 1991.
Paul Slichter