The Mycological Society of San Francisco was founded in 1950 to promote the understanding and enjoyment of fungi. Its mission has since expanded to the preservation of mycological habitats, and to promoting and maintaining the rights of the general public to collect mushrooms for study and recreational purposes on public lands.
The MSSF hosts a myriad of activities throughout the year. General meetings are held on the third Tuesday of each month from September through May (the locally active mushroom season) at the Randall Museum in San Francisco. Each general meeting begins with mushroom identification, book sales, and cultivation activities, then features a guest speaker on a selected mycological topic.
Throughout the year, MSSF offers numerous camping forays and single-day mushroom walks. On occasion they conduct weekend mycological retreats with forays, culinary fare, identification, workshops, talks and slide presentations.