Well-known species include common sorrel (Rumex acetosa) and curly dock (Rumex crispus).
The plants have long, lance-shaped leaves and small, reddish-green flowers in panicles.
Sorrel is edible, with a sour taste due to oxalic acid, and is sometimes used in salads or soups.
However, it is poisonous in large quantities.
Ecologically, sorrel provides food for insects, such as the caterpillars of the small copper butterfly.
In agriculture, it is often considered a weed.





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