Boletus haematinus
Mycologia 68: 980. 1976.
Common Name: none
Scattered to gregarious under red fir (Abies magnifica) in the Sierra Nevada Mountains; fruiting in the fall, rarely in the spring.
Unknown.
This bolete can be distinquished by blue-staining, bright yellow pores that turn red as it matures (except at the pileus margin, which remain yellow) and its association with red fir.
Bessette, A.E., Roody, W.C. & Bessette, A.R. (2000). North American Boletes: A Color Guide to the Fleshy Pored Mushrooms. Syracuse University Press: Syracuse, NY. 400 p.
Thiers, H.D. & Halling, R.E. (1976). California Boletes V. Two new species of Boletus. Mycologia 68: 976-983.
(Protologue)