We don't have synonyms for zygophyte yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are zymophyte, zyophyte and zygophore.
(n) :
(botany, obsolete) Any plant of a formerly proposed class or grand division (Zygophytes, Zygophyta, or Zygosporeae), in which reproduction consists in the union of two similar cells.
(n) :
(botany, obsolete) Any plant of a formerly proposed class or grand division (Zygophytes, Zygophyta, or Zygosporeae), in which reproduction consists in the union of two similar cells.