Morphological properties of spores and mycorrhizae of <i>Acaulospora scrobiculata</i> and <i>Glomus versiforme</i>, arbuscular fungi of the phylum <i>Glomeromycom</i>, were described and illustrated. The two species were revealed in trap cultures containing root-rhizosphere mixlures of plants colonizing maritime dunes of the Baltic Sea located in north-western Poland and then propagated in one-species cultures to characterize properties of their mycorrhizae. <i>Acaulospona scrobiculata</i> had not previously been found in Poland, and the only earlier finding of <i>Gl. versiforme</i> in this country comes from the year 1912. The known distribution of the two fungal species in the world is also presented.