AbstractThe temperature profiles of two species ofCryptococcuswere compared. The pathogenicCr. neoformanshad a maximum temperature for growth of 39.8 °C and the non‐pathogenicCr. albidus, of 30.2 °C. The specific growth rates measured in the former were of an order of magnitude higher than in the latter, whereas the Arrhenius plots of the specific thermal death rates did not show a significant differe