Our knowledge of species distribution in arbuscular mycorrhizal fungi (AMF) is still limited and morphological variations found in isolates of one species may provide additional insight for understanding the characters used in the taxonomy of this group. The aims of this work were to expand biogeographical data regarding Acaulospora koskei Blaszk. and Acaulospora bireticulata Rothwell & Trappe, both found in an Araucaria Forest in São Paulo state, Brazil, as well as to compare the descriptions of these species with those of other similar AMF.
Glomeromycota; Araucaria angustifolia; arbuscular fungi; trap culture
