[Knotweeds: The Genera Aconogono, Persicaria and Polygonum in Mt. Adams Country]

Alpine Knotweed, Newberry's Knotweed, Fleeceflower, Alpine Knotweed, Davis' Knotweed

Aconogonon davisiae var. davisiae

Synonyms: Polygonum davisiae, Polygonum newberryi, Polygonum newberryi var. newberryi

Flowers and leaf of Alpine Knotweed, Newberry's Knotweed, Fleeceflower, Alpine Knotweed, Davis' Knotweed: Aconogonon davisiae var. davisiae (Synonyms: Polygonum davisiae, Polygonum newberryi, Polygonum newberryi var. newberryi)

The photo above shows a close-up view of the flower and leaf of alpine knotweed as seen near 7400' on the Highline Trail #114 on the northeastern corner of Mt. Adams.........July 24, 2005.

Flowers of Alpine Knotweed, Newberry's Knotweed, Fleeceflower, Alpine Knotweed, Davis' Knotweed: Aconogonon davisiae var. davisiae (Synonyms: Polygonum davisiae, Polygonum newberryi, Polygonum newberryi var. newberryi)

The photo above shows an additional photo of the flowers of alpine knotweed as seen near 7400' on the Highline Trail #114 on the northeastern corner of Mt. Adams...........July 24, 2005.

Other Locations This Species May be Seen on Mt. Adams:

This species is very common from just below treeline to well into the alpine habitats of Mt. Adams. It may best be viewed in sandy soils along or above the Round the Mountain Trail #9 from Bird Creek Meadows to the north side of the mountain.


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

Newberry's knotweed as seen near Little Mt. Adams..........August 13, 2012.

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

Newberry's fleeceflower as seen near Little Mt. Adams.........July 17, 2006.

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

Alpine fleeceflower blooming along the climbers trail near the upper reaches of Hellroaring Valley, Mt. Adams, Yakama Nation lands........September 2, 2017.

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

The photo above shows alpine knotweed as seen along the Round the Mt. Trail #9 just west of its junction with the Shorthorn Trail #16 in the Mt. Adams Wilderness.........August 24, 2008.

Paul Slichter