Further observations on races of potato wart in Newfoundland

A race of the wart fungus,Synchytrium endobioticum corresponding in behaviour to European race 2 occurs commonly in Newfoundland. In 1970 the presence of a race which can infectUltimus but notHilla, and hence appears similar to race 8, has been confirmed. A type similar to race 1 has been isolated from a few locations.