Recent descriptions, photos, and bibliographies of wetland plant associations in Oregon are available for all but the Klamath Ecoregion. Plant association concepts are consistent with the NVCS.
McCain, C. & J.A. Christy. 2005. Field guide to riparian plant communities in northwestern Oregon. USDA Forest Service, Pacific Northwest Region. Technical Paper R6-NR-ECOL-TP-01-05. 357 PP. + CD.
Christy, J.A. 2004. Native freshwater wetland plant associations of northwestern Oregon. Oregon Natural Heritage Information Center, Portland. 246 pp.
Central and Eastern Oregon
Crowe, E.A., B.L. Kovalchik & M. Kerr. 2004. Riparian and wetland vegetation of central and eastern Oregon. Oregon Natural Heritage Information Center, Portland. 483 pp
Christy, J.A., J.S. Kagan & A.M. Wiedemann. 1998. Plant associations of the Oregon Dunes National Recreation Area, Siuslaw National Forest, Oregon. Technical Paper R6-NR-ECOL-TP-09-98. USDA Forest Service, Pacific Northwest Region, Portland, Oregon. 183 pp.