Populus tremula
L.
KW [Mycology] 4542. Place of collection: Ukraine; Zhytomyr Oblast; Ovruch District; Gladkovichi village; Gladkovits’ka forest lodge (N51°20' E28°52'). Date of collection: 23 August 1945. Associated organism: Simocybe haustellaris. Collector: Sosin, P.E..