Deuteromycota. The division Deuteromycota is also called the Fungi Imperfecti or Imperfect Fungi referring to our imperfect knowledge of their complete life cycles. The Deuteromycota are characterized by production of septate mycelium and/or yeasts, and a sexual life cycle that is either unknown or absent.Asexual reproduction is by means of conidia (sing.=conidium) or may be lacking. A conidium may be defined as an asexual spore that is not produced in a sporangium.arasexual Cycle. There are many species of Deuteromycota in which a sexual stage is not known. Of these, there are, undoubtedly, species in which sexual reproduction occurs only in a restricted set of environmental conditions so that the occurrence of the sexual stage is infrequent.