penicillium hetheringtonii penicillium hetheringtonii penicillium hetheringtonii is a species of the genus of penicillium which is named after a.c. hetherington. this species was first isolated from beach soil in land's end garden in treasure island, florida in the united states. penicillium hetheringtonii produces citrinin and quinolactacin. penicillium hetheringtonii scientific classification kingdom: fungi division: ascomycota class: eurotiomycetes order: eurotiales family: trichocomaceae genus: penicillium species: p. hetheringtonii binomial name penicillium hetheringtoniihoubraken, frisvad & samson 2010