Fungicidal hydroxyalkyl-triazolyl derivatives of the formula ##STR1## in which R represents a radical of the formula --CH.sub.2 --CH(CH.sub.3).sub.2, ##STR2## Z represents halogen, alkyl with 1 to 4 carbon atoms, halogenoalkyl with 1 or 2 carbon atoms and 1 to 5 halogen atoms, halogenoalkoxy with 1 or 2 carbon atoms and 1 to 5 halogen atoms, halogenoalkylthio with 1 or 2 carbon atoms and 1 to 5 halogen atoms, phenyl or alkoximinomethyl with 1 to 4 carbon atoms in the alkoxy group andm represents the numbers 0, 1, 2 or 3, and addition products thereof with acids and metal salts. Intermediates of the formulas ##STR3## are also new.