Brefeldochium pruinosum, gen. et sp. nov., the anamorph of Polydesmia pruinosa (Hyaloscyphaceae, Helotiales, Ascomycota)
Verkley, Gerard J.M.
A sporodochial anamorph was observed in single-ascospore cultures of the discomycete Polydesmia pruinosa. The hyaline, septate, falcate phialoconidia are reminiscent of Fusarium macroconidia, but lack a hilum and are only formed in sporodochia. Conidioma formation was followed in vitro by formation of well-differentiated and fertile apothecia. This is the first confirmed report of an anamorph for the discomycete genus Polydesmia since 1891, when the German mycologist Brefeld described a conidial morph which he observed in his isolates of P. pruinosa. Because the anamorph has not been found in nature, the formal description is based on conidiomata formed in vitro. As there is no genus in which to satisfactorily classify this conidial state, the new anamorph genus Brefeldochium is proposed.