CYLINDROCLADIUM NAVICULATUM SP-NOV, AND 2 NEW VESICULATE HYPHOMYCETE GENERA, FALCOCLADIUM AND VESICLADIELLA

Cylindrocladium naviculatum is newly described and distinguished from other Cylindrocladium species based on its narrowly 1-septate conidia, naviculate vesicles, and cultural characteristics. Falcocladium and V esicladiella are described as two new hyphomycete genera with white sp orodochial conidiomata from Eucalyptus and Araucaria leaf litter respe ctively. Both genera are characterized by having thick-walled, non-sep tate stipe extensions that terminate in thin-walled vesicles. Falcocla dium has appendaged, falcate conidia, whereas Vesicladiella has asepta te, cylindrical conidia. These genera are also distinguished from othe rs such as Cylindrodendrum, Cylindrocladium and Cylindrocladiella by t he morphology of their conidiomata and stipe extensions.