[Mugworts, Sageworts and Wormwoods: The Genus Artemisia East of the Cascade Mountains of Oregon and Washington]

Columbia River Sagewort, Columbia River Wormwood, Riverbank Wormwood

Artemisia ludoviciana ssp. lindleyana

Synonyms: Artemisia lindleyana, Artemisia prescottiana

Inflorescence of Columbia River Sagewort, Columbia River Wormwood, Riverbank Wormwood: Artemisia ludoviciana ssp. lindleyana (Synonyms: Artemisia lindleyana, Artemisia prescottiana)

A close-up of the inflorescence of riverbank wormwood as seen on the Sandy River delta along the Columbia River................September 24, 2010.
Characteristics:

 

Habitat:

Western wormwood is a wildflower that may be found along the edges of streams and rivers below the high water mark.

Range:

Western wormwood is found mostly east of the Cascades along the banks of the Columbia River and its major tributaries.

In the Columbia River Gorge, riverbank wormwood may be found below the high water mark along the Columbia River, Deschutes River and John Day River from the Sandy River in the west and eastward towards Umatilla, OR

Columbia River Sagewort, Columbia River Wormwood, Riverbank Wormwood: Artemisia lindleyana (Synonym: Artemisia prescottiana) - Inflorescence of Columbia River Sagewort, Columbia River Wormwood, Riverbank Wormwood: Artemisia lindleyana (Synonym: Artemisia prescottiana) - Columbia River Sagewort, Columbia River Wormwood, Riverbank Wormwood: Artemisia lindleyana (Synonym: Artemisia prescottiana)

Riverbank wormwood as seen amongst 10' willows on a sandbar along the Columbia River shoreline at the Sandy River Delta...........September 13, 2013.

Columbia River Sagewort, Columbia River Wormwood, Riverbank Wormwood: Artemisia ludoviciana ssp. lindleyana (Synonyms: Artemisia lindleyana, Artemisia prescottiana) - Inflorescence of Columbia River Sagewort, Columbia River Wormwood, Riverbank Wormwood: Artemisia ludoviciana ssp. lindleyana (Synonyms: Artemisia lindleyana, Artemisia prescottiana) - Leaves of Columbia River Sagewort, Columbia River Wormwood, Riverbank Wormwood: Artemisia ludoviciana ssp. lindleyana (Synonyms: Artemisia lindleyana, Artemisia prescottiana)

Additional close-ups riverbank wormwood as seen on the Sandy River delta along the Columbia River................September 24, 2010. Note that the upper leaf surface is greenish while the lower surface is whitish.
Paul Slichter