Studies were carried out on the cultivability of Lentinus subnudus on woodlogs of various hardwood trees and the effect of chemical treatments of these woodlogs with citric, tartaric, indole-3-acetic (IAA) and gibberellic (GA(3)) acids on fruitbody production and yield. Of the four hardwood species of Chlorophora excelsa, Terminalia ivorensis, Terminalia superba and Spondias mombin tried, woodlogs of C excelsa were the best in supporting L. subnudus fructification, followed by those of S. mombin. On the effect of chemical treatments of C excelsa and S. mombin woodlogs on L. subnudus' fruitbody production and yield, bed logs treated with 50 ppm indole-3-acetic and gibberellic acids were the best in enhancing fructification and yield with C excelsa GA3 and lAA treated bed logs consistently producing more fruitbodies and greater yields than S. mombin bed logs given the same treatments. The implication of these findings in relation to results obtained in previous studies are discussed. (C) 2003 Elsevier Ltd. All rights reserved.