ABSTRACT
In Utah juniper, Juniperus osteosperma, an important tree of the western United States, both vesicular-arbuscular (VA) and ectomycorrhizae occur on excavated roots collected from natural, undisturbed sites in Colorado. Based on the “inoculated pot culture” technique, Glomus fasciculatum is the native VAM fungal symbiont. By means of rooted stem cuttings, resynthesis of VA mycorrhizae with two isolates of G. fasciculatum and one of G. mosseae was achieved. The reported mycorrhizal status of additional Juniperus species is given.