About Caloboletus marshii D.Arora, C.F.Schwarz & J.L.Frank
Caloboletus marshii has a cap that measures 2 to 6 inches (6 to 15 cm) across. Its stipe is 1 to 4 inches (3 to 10 cm) long, and 0.7 to 4 inches (2 to 10 cm) wide. Both the pore surface and the flesh of the fungus are yellow, and they turn blue quickly when cut or bruised. This species is a mycorrhizal fungus that grows in association with live oaks in California, Oregon, and Washington. It produces fruiting bodies in late summer and fall, often before seasonal rain arrives, and it is rarely found fruiting in November.
