THE ANAMORPHS OF GROVESIELLA-ABIETICOLA

An ascomycete associated with the recently described coelomycete Pitos troma abietinum on dead twigs of Abies alba in Poland was identified a s Grovesiella abieticola. Two characteristics of the G. abieticola fro m Poland differed from those of collections from North America. The as cospores of G. abieticola collected in North America were wider [(3.2- )3.5-4.2(-4.8) mum] than those from Europe [2.2-3.5(-4) mum], and the European populations do not produce cankers while the North American p opulations do. Single ascospore isolates of G. abieticola and single c onidia isolates of P. abietinum produced identical colony morphologies and in single ascospore isolates the Pitostroma-state was formed in a ddition to the microconidial state. Thus, P. abietinum is the macrocon idial state of G. abieticola. A description of the morphology of the m icro- and macroconidial state of G. abieticola in culture is given.