Hi, I'm pretty sure this fungus is Leucocoprinus birnbaumii, but my question is "Why"? I found this in one of my indoor cactus gardens. I do put the cacti outside in a sunroom for the summer. We have had pretty high humidity in Ohio lately. I've posted pics as I found it, in obvious sandy soil. The soil was dry, but the air humid. After the humidity lowered, the mushrooms died. Is it the humidity? If my cacti were overwatered, they would die. The soil, tests as being very dry. Thanks
