Mucor is dimorphic?!?

Mycology has always been an interesting subject for me. I am fascinated by the different morphologies of moulds that grow on bread and fruit. During class, I loved to draw the morphologies (see my Mycology notes from my PHM training ). My notes about Zygomycetes I learned that Mucormycetes (or Zygomycetes in the old taxonomy) have coenocytic, aseptate hyphae. The organisms within the Mycormycete group (e.g., Mucor sp. and Rhizopus sp., and the organisms I had sketched, in the picture above) can be differentiated based on their microscopic morphologies. For example, both Mucor sp. and Rhizopus sp. have circular to oval sporangia without apophyses. Mucor sp. is distinguished from Rhizopus sp. by its lack of rhizoids (i.e., roots). Fungi can take on either multicelled forms (e.g., moulds) or single-celled forms (e.g., yeast-like). Some fungi can take on both! Dimorphic fungi, such as Coccidioides sp. and Blastomyces sp., have been observed in both ...