zygomycetoushttp://www.oed.com/dictionary/zygomycetous_adj%3Ftab%3Dmeaning_and_usezygomycetous, adj.
First published 1986; not fully revised

zygomycetousadjective

Botany.
  1. 1928–
    Stressed as zygomyˈcetous.
    1. 1928
      A convergent development has apparently occurred in the Zygomycetous sporangia which have become gonotoconts.
      C. W. Dodge, translation of E. A. Gäumann, Comparative Morphology of Fungi xxxvi. 621
    2. 1952
      Such a theory is based almost entirely on the asexual cycle, the zygomycetous reproduction having no counterpart in the present-day Saprolegniaceae which might give us a clue to its origin.
      C. J. Alexopoulos, Introductory Mycology vii. 180
    3. 1982
      Synoptic keys to the genera and species of zygomycetous mycorrhizal fungi.
      Phytopathology vol. 72 1102 (heading)

Originally published as part of the entry for Zygomycetes, n.

Zygomycetes, n. was first published in 1986; not fully revised.