Tuber californicum
Proc. Calif. Acad. Sci., ser. 3, 1: 274. 1899.
Common Name: none
For description see Gilkey, Beug et al., & 'California Mushrooms'.
Solitary to gregarious to caespitose; hypogeous under oaks, pines, and Douglas fir; late winter and spring; fairly common.
Edible.
The finely pubescent peridium and round spores separates this Tuber from similar species.
Arora, D. (1986). Mushrooms Demystified. Ten Speed Press: Berkeley, CA. 959 p.
Beug, M.W., Bessette, A.E. & Bessette, A.R. (2014). Ascomycete Fungi of North America. University of Texas Press: Austin, TX. 488 p.
Desjardin, D.E., Wood, M.G. & Stevens, F.A. (2015). California Mushrooms: The Comprehensive Identification Guide. Timber Press: Portland, OR. 560 p.
Gilkey, Helen M. (1939). Tuberales of North America. Oregon State College: Corvallis, OR. 63 p. (PDF)
Harkness, H.W. (1899). Californian hypogeous fungi. Proc. Calif. Acad. Sci., ser 3 1: 241-292. (Protologue)
Trappe, J.M., Molina, R., Luoma, D.L., Cázares, E., Pilz, D., Smith, J., Castellano, M.A., Miller, S.L. & Trappe, M.J. (2009). Diversity, Ecology, and Conservation of Truffle Fungi in Forests of the Pacific Northwest. U. S. Department of Agriculture, Forest Service, Pacific Northwest Research Station: Portland, OR. 194 p. (PDF)