penicillium desertorum penicillium desertorum penicillium desertorum is a species of the genus of penicillium which was isolated from desert soil under the plant oryzopsis hymenoides in wyoming in the us. penicillium desertorum scientific classification kingdom: fungi division: ascomycota class: eurotiomycetes order: eurotiales family: trichocomaceae genus: penicillium species: p. desertorum binomial name penicillium desertorumfrisvad, houbraken & samson 2012