Kellogg's Knotweed
Polygonum polygaloides
ssp. kellogii
Synonyms: Polygonum kelloggii, Polygonum minutissimum, Polygonum unifolium
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Kellogg's knotweed as seen at left in a moist swale along the Roads End Trail #201A, Strawberry Mountain Wilderness.......July 18, 2013. The photo at right shows Kellogg's knotweed blooming in a vernally moist swale along Box Canyon Road, Simcoe Mountains Unit of the Klickitat Wildlife Area......June 15, 2022.
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Kellogg's knotweed as seen in a moist swale along the South Loop Road about one mile below the Kiger Gorge overlook, Steens Mountain, Harney County, Oregon.........September 2, 2011.
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The photo above shows a close-up of the flower
and leaves of Kellogg's knotweed as seen at 4100' at the DNR rock quarry abreast
the ridge that divides the Dairy and Cougar Creek drainages at the southeastern
corner of Mt. Adams..........June 11, 2005. The other photos on this
page were taken at the same location on the same date.
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The photo at left shows Kellogg's knotweed as seen along the Umatilla Rim Trail at the eastern edge of the North Fork Wilderness in northeastern Oregon........June 24, 2007. The photo at right shows Kellogg's knotweed as seen from upland forest along the North Fork Crooked River about one and one-quarter miles south of the junction of FS Roads #42 and #4215, Ochoco National Forest........June 12, 2015.
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Kellogg's knotweed as seen (left) in meadows along Bear Creek, just west of Forest Road #1640, Malheur National Forest.........July 1, 2010. The photos at center and right show Kellogg's knotweed as seen along the Round Mountain South Trail #805 about a mile north of the south trailhead atFS Road # 42, Ochoco National Forest.........May 28, 2016.
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Kellogg's knotweed as seen in vernally moist swales and drying streambeds along Indian Creek, northwestern corner of Big Summit Prairie, Ochoco National Forest.......May 27, 2018.
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Kellogg's knotweed as observed in vernally moist swales at Mud Creek Campground, Fremont-Winema National Forest.......July 1, 2019.
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Kellogg's knotweed blooming in a vernally moist swale or drainage along the edge of Box Canyon Road, on BLM lands about three-quarters of a mile east of the gated trailhead, north-central Klickitat County, WA.....May 22, 2022.
Kellogg's knotweed observed in a drainage about one-quarter of a mile west of Box Canyon Creek, Simcoe Mountains Unit of the Klickitat Wildlife Area......May 23, 2020.
Paul Slichter