Abstract: A class of compounds having the structural formula ##STR1## in which R is C.sub.1 -C.sub.8 alkyl, C.sub.3 -C.sub.6 cycloalkyl, phenyl or substituted phenyl; N, R.sup.1 and R.sup.2 form a monocyclic or bicyclic nitrogen heterocycle which is at least partially saturated and which may contain oxygen or sulfur or be substituted with lower alkyl; and physiologically acceptable salts thereof is disclosed.A process for forming the thiophene substituted cycloamines of the subject invention is described. A composition comprising the compound of the subject invention and a suitable carrier therefor is taught.A method of controlling phytopathogenetic fungi is disclosed. In this method a fungicidally effective amount of the compound of the present invention is applied to the locus to be protected.