Some experiments on the germination of basidiospores of Fomitopsis olivacea (YASUDA) IMAZEKI et AOSHIMA.

(1) In Tokyo omitopsis olivac a IMAZEKI et AOSHIMA, nov. comb. was found to be fruiting at the beginning of July once a year.(2) The basidiospore has not any swellings in the germinating process, but has a germination tube in one side.(3) They germinate at the temperature from 13°C to 40°C. The optimum temperature for the germination is about 33°C.(4) The possibility of overwintering of the basidiospores is very little.(5) The direct sunlight in June in Tokyo is very harmfull for the germination of basidiospores.(6) The high temperature at the time of exposure in direct sunlight does not influence directly on the germination of basidiospores.