Broadleaf Knotweed, Broad-leaved Knotweed, Leafy Dwarf Knotweed, Zigzag Knotweed
Polygonum minimum
Synonym: Polygonum torreyi
![Close-up of a flower subtended by a broad stem leaf of Broadleaf Knotweed, Broad-leaved Knotweed, Leafy Dwarf Knotweed, Zigzag Knotweed: Polygonum minimum (Synonym: Polygonum torreyi)](../../../../cascade/mtadams/3/buck/polygonum/minimum/minimumc3.jpg)
Unlabeled photos on this page were taken along Road #23 at the Mt.
Adams Viewpoint about one-half mile south of the intersection with Road 8810..........August
8, 2005.
![Broadleaf Knotweed, Broad-leaved Knotweed, Leafy Dwarf Knotweed, Zigzag Knotweed: Polygonum minimum (Synonym: Polygonum torreyi)](../../../../basin/3petal/buck/polygonum/minimum/minimum1a.jpg)
The photo above shows broadleaf knotweed as seen along the Umatilla Rim Trail #3080 near Tollgate in the Umatilla N.F..........June 24, 2007.
![Broadleaf Knotweed, Broad-leaved Knotweed, Leafy Dwarf Knotweed, Zigzag Knotweed: Polygonum minimum (Synonym: Polygonum torreyi)](minimum/minimum07-14-2020.jpg)
Broadleaf knotweed observed along the Pacific Crest Trail #2000 on the south side of Cook and Green Peak, Klamath National Forest......July 14, 2020.
- ![Broadleaf Knotweed, Broad-leaved Knotweed, Leafy Dwarf Knotweed, Zigzag Knotweed: Polygonum minimum (Synonym: Polygonum torreyi)](../../../../basin/3petal/buck/polygonum/minimum/minimum4b.jpg)
Broadleaf knotweed growing on the cut bank along the North Loop Road about one mile downhill from the Kiger Gorge Overlook, Steens Mountain, Harney County, Oregon.........August 31, 2011.
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- ![Flower and stem leaf of Broadleaf Knotweed, Broad-leaved Knotweed, Leafy Dwarf Knotweed, Zigzag Knotweed: Polygonum minimum (Synonym: Polygonum torreyi)](../../../../cascade/mtadams/3/buck/polygonum/minimum/minimumc2.jpg)
Paul Slichter