The diverse wetland and riparian plant associations described below are based on a 2017 revision of these elements of Oregon's vegetation classification. They are sorted informally into 16 generalized habitats that most people will recognize. The habitats are broadly defined by water chemistry, water temperature, vegetation structure, hydroperiod, soils, and landscape position. They can be herbaceous, shrub-dominated, or forested. Some are well known, some are rarities on the landscape, and at certain times of the year some may not appear to be wetlands at all. For convenience, they are listed alphabetically.
Sandy River Preserve
(Rick McEwan, The Nature Conservancy)
The following tools will help users to identify plant associations and locate additional sources of information about each one: