Calvatia booniana A.H. Sm.
Verbatim Date: Sat May 13 2017 10:51:09 GMT-0700 (PDT)
United States, California, San Mateo County, US-CA, US
37.205892 -122.365504 +-5m.
The third picture shows this in its setting. It looked like a small stone until we scoped it and saw the veining.
Rights Holder: © held by the observer (listed as 'Collector') at iNaturalist.org, with some rights reserved (CC BY-SA)
Record Id: a9cbfed9-733f-425f-b58d-87dbf9bd830f