The fungus Phomopsis pseudotsugae, which has from time to time been known under different names, has a wide distribution in Britain and also occurs on the continent of Europe. It may attack both the green and the blue Douglas firs, the European and Japanese larches and Abies grandis among the silver firs. It is possible that other conifers may be subject to the same disease. This Bulletin gives a detailed technical account of the disease.
