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- Index Fungorum link: Agaricus bisporus (J.E. Lange) Imbach 1946 (+ MycoBank)
- MycoBank link: Agaricus bisporus (J.E. Lange) Imbach
- NCBI link: Agaricus bisporus
These large, open, flat mushrooms are sometimes called portobello or portobella, but they are actually the same species as their smaller versions, the button and cup mushrooms.