[Knotweeds: The Genera Aconogonon, Fallopia, Persicaria and Polygonum in the Cascade Mountains of Oregon and Washington]

Newberry's Knotweed

Aconogonon davisiae var. davisiae

Synonyms: Aconogonon davisiae, Aconogonum davisiae, Aconogonum davisiae var. glabrum, Aconogonum newberryi, Polygonum davisiae, Polygonum newberryi, Polygonum newberryi var. glabrum, Polygonum newberryi var. newberryi

Davis' Knotweed, Newberry's Knotweed, Newberry's Fleeceflower: Aconogonon davisiae var. davisiae (Synonyms: Aconogonon davisiae, Aconogonum davisiae, Aconogonum davisiae var. glabrum, Aconogonum newberryi, Polygonum davisiae, Polygonum newberryi, Polygonum newberryi var. glabrum, Polygonum newberryi var. newberryi) - Davis' Knotweed, Newberry's Knotweed, Newberry's Fleeceflower: Aconogonon davisiae var. davisiae (Synonyms: Aconogonon davisiae, Aconogonum davisiae, Aconogonum davisiae var. glabrum, Aconogonum newberryi, Polygonum davisiae, Polygonum newberryi, Polygonum newberryi var. glabrum, Polygonum newberryi var. newberryi)

Newberry's fleeceflower in bloom at left on sandy slopes along the Vista Ridge Ski Trail above Mt. Hood Meadows Ski Area.................July 25, 2010. The photo at right shows Newberry's fleeceflower in bloom on sandy slopes along the Vista Ridge Ski Trail above Mt. Hood Meadows Ski Area.................July 04, 2021.

Davis' Knotweed, Newberry's Knotweed, Newberry's Fleeceflower: Aconogonon davisiae var. davisiae (Synonyms: Aconogonon davisiae, Aconogonum davisiae, Aconogonum davisiae var. glabrum, Aconogonum newberryi, Polygonum davisiae, Polygonum newberryi, Polygonum newberryi var. glabrum, Polygonum newberryi var. newberryi)

Newberry's fleeceflower as seen on the western portion of the summit of Lookout Mountain, northern edge of the Badger Creek Wilderness..........July 4, 2013.

Davis' Knotweed, Newberry's Knotweed, Newberry's Fleeceflower: Aconogonon davisiae var. davisiae (Synonyms: Aconogonon davisiae, Aconogonum davisiae, Aconogonum davisiae var. glabrum, Aconogonum newberryi, Polygonum davisiae, Polygonum newberryi, Polygonum newberryi var. glabrum, Polygonum newberryi var. newberryi) - Davis' Knotweed, Newberry's Knotweed, Newberry's Fleeceflower: Aconogonon davisiae var. davisiae (Synonyms: Aconogonon davisiae, Aconogonum davisiae, Aconogonum davisiae var. glabrum, Aconogonum newberryi, Polygonum davisiae, Polygonum newberryi, Polygonum newberryi var. glabrum, Polygonum newberryi var. newberryi)

Newberry's fleeceflower as seen at left along the summit ridge of Lookout Mountain, northern edge of the Badger Creek Wilderness...........June 21, 2014. The photo at right shows Newberry's fleeceflower as seen along the Lowder Mountain Trail #3329, Three Sisters Wilderness.....June 23, 2018.

Fall color of Davis' Knotweed, Newberry's Knotweed, Newberry's Fleeceflower: Aconogonon davisiae var. davisiae (Synonyms: Aconogonon davisiae, Aconogonum davisiae, Aconogonum davisiae var. glabrum, Aconogonum newberryi, Polygonum davisiae, Polygonum newberryi, Polygonum newberryi var. glabrum, Polygonum newberryi var. newberryi)

Beautiful fall color beginning to show on Newberry's knotweed as seen atop Badger Peak in the Dark Divide, Gifford Pinchot National Forest..........August 22, 2014.

Davis' Knotweed, Newberry's Knotweed, Newberry's Fleeceflower: Aconogonon davisiae var. davisiae (Synonyms: Aconogonon davisiae, Aconogonum davisiae, Aconogonum davisiae var. glabrum, Aconogonum newberryi, Polygonum davisiae, Polygonum newberryi, Polygonum newberryi var. glabrum, Polygonum newberryi var. newberryi)

Another view of newberry's knotweed as seen on sandy soils above the Mt. Hood Meadows Ski Resort, Mt. Hood National Forest.........July 23, 2017.

Newberry's knotweed from Mt Hood, Mt Hood NF

Polygonum newberryi from Sunrise, Mt Rainier National Park- early September, 1995.

An additional photo of Newberry's Knotweed: Photo taken at Sunrise, Mt Rainier National Park- August 23, 1996.
Paul Slichter