The Collaborative International Dictionary of English v.0.48:

blastomycete \blastomycete\ n.
   any of various yeastlike budding fungi of the genus
   Blastomyces; -- they may cause disease in humans and other
   animals.
   [WordNet 1.5]

WordNet (r) 3.0 (2006):

blastomycete
    n 1: any of various yeastlike budding fungi of the genus
         Blastomyces; cause disease in humans and other animals