ABSTRACT: A form new to science, Peniophora quercina f. merulioides, is described for the subarid region of the Middle East, grown on Quercus calliprinos wood and characterized by a merulioid hymenophore. Analysis of its spore variability shows an overlapping size and shape with the type. Both Peniophora quercina and P. cinerea are recorded for the first time for Israel.

KEYWORDS: Mediterranean, corticioid fungi, Peniophoraceae