MICROASCUS SPECIES NEW TO THE MYCOFLORA OF JAPAN

Abstract

Three species of the genus Microascus, M. trigonosporus Emmons et Dodge, M. cirrosus Curzi, and M. cinereus (Emile-Weil et Gaudin) Curzi, were described as new findings in Japan. Comparative morphological observations made with these isolates and seven cultures received from European collections have shown the questionable value of perithecial or conidial characteristic as dependable taxonomic criteria, which necessitated the use of the features of ascospores as criteria for the separation of species. A key to the species based on this principle was presented.