Striate Knotweed
Polygonum achoreum
Striate Knotweed
Early Flower
Regina
18-August-2024
The flowers are closed, whereas the flowers of P. aviculare are closed or semi-open. The perianth tube is 40-55% of perianth length, whereas in P. aviculare the perianth tube is 20-57% of perianth length. The tepals are yellow-green (only rarely pinkish), whereas the tepals of P. aviculare are green or reddish brown with white, pink, or red margins. The tepals are more or less keeled, whereas the tepals of P. aviculare are not keeled.
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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