North American Mycological Association
The North American Mycological Association promotes, pursues, and advances the science of mycology. NAMA has 78 affiliated clubs across North America. The members are amateurs and professionals that are passionate about mushrooms. NAMA organizes annual and regional forays with affiliated clubs. The 2016 annual foray will be in Virginia. You can see the list of Affiliated Clubs here. NAMA produces both a newsletter, The Mycophile, and the McIlvainea journal.
The IMA is an affiliated club with NAMA and this allows you to join NAMA at a reduced rate of $25. See the Join NAMA page for details. You may pay dues online or send dues directly to the NAMA Membership Secretary. Be sure to include your club name to receive the discounted rate.