Collection location: Los Trancos Preserve, Palo Alto, Santa Clara Co., California, USA [Click for map]
Just had to add this photo, it is Entoloma, you can see the pinkish tones on the gills from the spores. But also you can see the pinkish tones in the light brown spore print on the top of the stipe.
But of course, this is the strangish growth patteren I’ve seen. Nice stipe, maybe this should be Entoloma corkscrewium?