Abstract A description is provided for Lachnellula arida , which is generally regarded as a saprobe with almost all observations as fruitbodies erumpent from bark of dead twigs and small branches. However, L. arida can be pathogenic on Pinaceae. Information is included its geographical distribution (Canada (Alberta, British Columbia, Quebec), USA (Arizona, California, Colorado, Idaho, Michigan, Montana, Oregon, Utah, Washington, Wyoming), Japan, Pakistan, France, Sweden and Switzerland) and hosts ( Abies spp., Juniperus communis , Larix spp., Picea spp., Pinus spp. and Tsuga mertensiana ).