The benefits of global warming have increased the numbers and frequency of occurrence of British wild orchids in the last twenty years. A study by the Botanical Society of the British Isles (BSBI) has found that the bee orchid and the pyramidal orchid have virtually doubled in frequency since 1987. The study also found that one rare orchid, the lesser butterfly orchid has declined over 50 percent, although there is no proof that the cause is global warming.
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