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Any flowering plant that grows without intentional human aid. Wildflowers are the source of all cultivated garden varieties of flowers. A wildflower growing where it is unwanted is considered a weed. Thousands of the approximately 250,000 species of flowering plants are wildflowers. Wildflowers can be divided into three categories by location: those found in the tropics and subtropics, those in temperate regions, and those that grow on the summits of mountain chains and in the Arctic and Antarctic.
This entry comes from Encyclopædia Britannica Concise. For the full entry on wildflower, visit Britannica.com.