AbstractPopulations of fungi and bacteria dominated by white yeasts and resembling those associated with leaves, were isolated from outer sheathing scales of dormant buds of 7 genera of deciduous trees(Fagus, Aesculus, Acer, Ulmus, Betula, PopulusandQuercus)but the internal parts ofTiliaandFraxinusbuds were also consistently contaminated.The importance of using samples of homogenized tissue and the temperature of the agar media are discussed.