I'm in Orinda, but I'm up in the area around Bolinas periodically. Are you out that direction? I wanted to get involved with the Mycological Society of San Francisco, but my SF Cactus & Succulent Society meets on the same evening each month. I think I had A. velosa here in the back garden at the house a few days ago.
Discussion
Nice I’m much farther north. The mycology society of Sonoma county has some great meetups in the fall.