Oidium (o-id'e-um)

A genus of the order Ascomycetes, with the preferable generic name of Endomyces. O. albicans. Syn.: Endomyces albicans, Aphthaphyte, Monilia albicans. Cotton fungus, fungus of thrush; a species the filaments and spores of which make up the flakes" and patches characteristic of stomatitis parasitic a. According to Grawitz, it is a transitional form of Mycoderma vin i. O. furfur. Syn.: Mala ezia furfur. The cause of pityriasis versicolor. See Micros por on furfur. O. Schoenleinii. The cause of favus. See A chorion Schoenleinii, under A chorion. O. tonsurans. Syn.: Trycophyton tonsurans. The cause of tinea capitis. O. tropicale. A species producing bronco-oidiosis. [Gr., dim. of oon, egg.]