Myxomycetes of Sonora, Mexico. I

The first study of the Myxomycetes from the Mexican state of Sonora is pres ented. Seventeen taxa are new records for the Sonoran Mycobiota. Diachea su bsessilis, Didymium rubeopus var. rubeopus and Trichia affinis are first re cords for Mexico. From a chorological point of view two taxa are interestin g: Hemitrichia parviverrucospora status and comb. nov, and Metatrichia horr ida. SEM photographs of the most important characteristics of these five sp ecies are provided.