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

Two close-up views 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.

Alpine knotweed as seen near 7200' along the Climber's Trail along the south rim of Hellroaring Canyon, Yakama Nation lands, Mount Adams..........September 14, 2022.

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.

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

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

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

Alpine fleeceflower typically turns color beginning in late August, providing some spectacular scenery, especially when backlit by the sun. This photo at left shows alpine fleeceflower along the Climber's Trail along the upper south rim of Hellroaring Valley, Bird Creek Meadows, Yakama Nation lands on Mt. Adams......August 30, 2021. The photo at right shows alpine fleeceflower showing its fall colored foliage at upper Gotchen Meadows, along the Round the Mountain Trail #9, Bird Creek Meadows......September 2, 2023.

The photo at left 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. The photo at right 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.........July 10. 2020.