zygosporichttp://www.oed.com/dictionary/zygosporic_adj%3Ftab%3Dmeaning_and_usezygosporic, adj.
First published 1921; not fully revised

zygosporicadjective

Botany.
  1. 1906–
    Of the nature of or producing zygospores.
    Stressed as zygoˈsporic.
    1. 1906
      Zygosporic cultures of the ‘Harvest Strain’ have..been kept running for nearly ten years.
      Science 27 July 122/2
    2. 1970
      In some species [of the genus Endogone]..the fruit-body is entirely zygosporic.
      J. Webster, Introduction to Fungi ii. ii. 141

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

zygospore, n. was first published in 1921; not fully revised.