Viral microcephaly, restricted to certain micro-locations, was frequent in 1965 in the Česká Lípa district in Laccaria laccata (Scop. ex Fr.) Cooke. It was also found in South Bohemia in 1958. In 1965, it was also found in Laccaria amethystina (Bull. ex Mérat) Murrill, and in Cantharellus infundibuliformis (Scop.) Fr. in Vlašim district. Observations from 1962 onward show that these fruiting bodies, affected by microcephaly, occur regularly and in increasing areas under favorable conditions.
Blattný C. (1966): Viröse Mikrokefalie bei Laccaria sp. und weiter Pilzarten. – Česká Mykologie 20(4): 215.
