penicillium purpurescens penicillium purpurescens penicillium purpurescens is a species of fungus in the genus penicillium which was isolated from soil in canada. this species is similar to penicillium glabrum. penicillium purpurescens produces hadacidin. penicillium purpurescens scientific classification kingdom: fungi division: ascomycota class: eurotiomycetes order: eurotiales family: trichocomaceae genus: penicillium species: p. purpurescens binomial name penicillium purpurescensbiourge, p. 1923 synonyms citromyces purpurascens, penicillium purpurrescens, penicillium viridialbo, penicillium viride-albo, citromyces virido-albus