The taxonomic revision of Agathis, when it iscomplete, will probably be on the lines outlined above and followed in this report. It is unlikely that formal botanical names can be given to all the ecotypes in the lowlands. Variants in the living tree occur between forms which have so far proved indistinguishable in the herbarium. The reasons why formal botanical nomenclature probably cannot be expected to give full resolution to variation in the living tree and the problems raised thereby are discussed in Whitmore (1976). It remains to be ascertained how the variation with elevation will be treated.