Close-up View of Common Knotweed, Common Lamb’s-quarters and Sheep Sorrel - Photographic study by Brian Johnston of these three species, Polygonum arenastrum, Chenopodium album and Rumex acetosella.
The Polygonaceae - Description of the family, which are herbs, shrubs, or rarely trees comprising about 30 genera and 1,000 species. Includes photos of a few examples.
Polygonaceae - Description of the family.
Polygonaceae (Buckwheat Family) - Information on this family and a photograph and description of Coast Buckwheat (Eriogonum latifolium), Sheep Sorrel (Rumex acetosella) and Curly Dock (Rumex crispus).
Polygonaceae - Botanical characteristics of this family with illustrations of several species.
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