Striate Knotweed
Polygonum achoreum
Striate Knotweed
Achoreum and Aviculare
Regina
18-August-2024
The two most common, weedy Polygonum species found in Saskatchewan are growing next to each other in this photo. The more erect and robust P. achoreum is on the right and the more prostate and less robust P. aviculare is on the left. Whitish powdery mildew affects both species, but is usually more prominent on P. achoreum.
A key to all species of family Polygonaceae that are found in Alberta,
written by Lorna Allen and Linda Kershaw, is found here.
A key to Saskatchewan species of genus Polygonum, derived from the key in
the Flora of North America, is found here.
 | Polygonaceae: Answers to key questions in Budd's Flora leading to this family. The answers do not all apply to all genera in Polygonaceae, but they all do apply to genus Polygonum.
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