Three species of Lentinus from Cameroon, L. sajor-caju (Fr.) Fr., L. squarrosulus Mont. and L. velutinus Fr. Were investigated in laboratory culture. L. velutinus produced xylarioid outgrowths in both monosperm and polysperm cultures, but these structures were observed only to a lesser extent in polysperm cultures of L. squarrosulus, and those of L. sajor-caju, as well as their respective monosperm cultures, remained sterile. Extracellular oxidase tests revealed all three species to be white-rot fungi.