Concentric Bodies in a Parasitic Fungus of Malva sylvestris (Malvaceae) Pollen

Ultrastructural examinations revealed concentric bodies in hyphae of a parasitic ascomycete\ infecting pollen of Malva sylvestris ssp[ mauritiana[ These structures consist of three concentric zones and are similar to those found in mycobionts of several lichens and only a few non! lichenized ascomycetes[ Typical septal pores of asco! mycete hyphae were present\ usually plugged by electron! dense material and associated with one or more Woronin bodies