A blue ascospore colour variant of Emericella nidulans

An Emericella nidulans with blue ascospores was isolated during a monitorin g of airborne fungal spores in a hospital environment. Morphological studie s as well as comparative physiological tests concerning the substrate utili sation showed no significant differences between this isolate and typical E . nidulans. The constantly blue pigment of the ascospores alone does not ju stify to constitute a valid basis for a taxonomic distinction. A key to the 5 known taxa of Emericella with blue ascospores is appended.