On 29 September 1968, the Czechoslovak Scientific Mycological Society organized its fifth autumn mycological excursion, returning to the traditional site of Karlštejn. Although weather conditions were poor, many fungi were found. Only 23 participants attended due to the rain. Several experts took part in identifying the collected material.
Kotlaba F. (1969): Exsursio autumnalis mycologorum cechoslovenicirum in silvas prope arcem Karlštejn anno 1968. – Česká Mykologie 23(3): 203–206.
