NEW FUNGAL VARIETIES. “∼22 million years ago, the association between a particular lower-attine ant and its leucocoprineaceous fungal cultivar underwent a fundamental change, giving rise to higher-attine agriculture. More recently, 2–8 million years ago, a higher-attine cultivar species gave rise to a new, even more specialized fungal species, Leucoagaricus gongylophorus, presumably as the result of prolonged domestication by and/or coevolution with a leaf-cutting ant species.”
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