The IBPGR in agreement with the Government of Papua New Guinea, is funding the collection of Musa germplasm in Papua New Guinea. This is being carried out in collaboration with the QDPI who are providing facilities for the tissue culturing and disease screening in quarantine of the collected germplasm. Papua New Guinea is an important centre of diversity of wild bananas with nine species from the genus Musa found there. Conservation of this wild genepool is of particular importance for future banana improvement programmes. A great diversity in cultivated diploid (AA) bananas also exists in Papua New Guinea the only country in the world where the cultivation of such diploid (AM bananas is of agricultural significance. Vigorous triploid clones are however invading the country and it is feared that they will eventually replace the diploids in banana cultivation. It is therefore important that these unique Papua New Guinea diploids are collected and conserved before they are lost forever. Germplasm collecting is being carried out during a number of missions to Papua New Guinea during 1988-9. This report gives details of the second mission, which took place during November 1988.