CHANGES IN LYOPHILIZED CULTURES OF ASPERGILLI AND PENICILLIA

Lyophilized cultures of Aspergillus and Penicillium stored for more th an thirty five years were examined for characters of taxonomic importa nce. There were only few variations recorded in microscopic characters e.g. size and shape of sterigmata, conidia etc. but a marked variatio n in many cases in the characteristic exudates from the colonies and t he soluble pigments in agar plates.