SUMMARY
Mycelia of Athelia epiphylla, A. decipiens, A. neuhoffii, A. borealis, A. bombycina, and A. bicolor growing in vitro were analyzed for fatty-acid composition by GLC and TLC methods. The major fatty acid in each fungus was a diunsaturated 18-carbon acid with lesser amounts of 16: 0, 18: 0, and 18: 1. An unidentified 18: 2 was detected in A. bicolor. The fungi could be identified by their fatty-acid patterns.