The mycelia of Lepista nuda were isolated from the different basidiocarps, collected from the forests of Robinia pseudo-acaciae and mixed forests of R. pseudo-acaciae and Quercus serrata. On the different woods, the growths of mycelia collected were compared with those transferred from Applied Mycology Division, RDA. Also, the measurements of dry weight loss, as growth of mycelia, were correlated to the productions of carbon dioxide on the different wood substrates. The growth of mycelia was observed to be best on the woods of R. pseudo-acaciae; followed by the growth on the woods of Morus alba. The growth rate of mycelia appeared to be various, depending on the different kinds of wood substrates. The soild-cultures of the mycelia on the sawdust of the R. pseudo-acaciae woods and the grains of sorghum and corn were conducted, but the basidiocarps were not obtained from these. Therefore, this mycelium collected was believed to be important as new mushroom utilizing the different woods resources instead of Q. serrata.