Boletus subalpinus (
Fungal Biology 117(7-8): 493. 2013.
Common Name: none
Basionym: Gastroboletus subalpinus Trappe & Thiers (Protologue)
For description see Thiers, Castellano et al. & 'California Mushrooms'.
Solitary to gregarious, hypogeous or subhypogeous under conifers (fir and pine); uncommon, fruiting in late summer or early fall at high elevations in the Sierra Nevada mountains.
Edible.
Boletus subalpinus is recognized by a pale buff-brown cap, contorted tubes that are initially covered with a thin, white membrane, a pallid stipe, and non-bluing tissues. Originally placed in the gastroid genus Gastroboletus, but molecular data shows that most if not all Gastroboletus species are closely related to various genera of non-gastroid boletes. Boletus subapinus is in the porcini clade and closely related to Boletus regineus. Gastroboletus amyloideus has been found to be merely a gastroid form of Xerocomellus amylosporus and Gastroboletus turbinatus probably belongs in the genus Neoboletus.
Castellano, M.A., Smith, J.E., O'Dell, T., Cázares, E. & Nugent, S. (1999). Handbook to Strategy 1 Fungal Species in the Northwest Forest Plan. U. S. Department of Agriculture, Forest Service, Pacific Northwest Research Station: Portland, OR. 195 p. (PDF)
Desjardin, D.E., Wood, M.G. & Stevens, F.A. (2015). California Mushrooms: The Comprehensive Identification Guide. Timber Press: Portland, OR. 560 p.
Nuhn, M.E., Binder, M., Taylor, A.F., Halling, R.E. & Hibbett, D.S. (2013). Phylogenetic overview of the Boletineae. Fungal Biology 117(7–8): 479-511.
Thiers, H.D. (1975). California Mushrooms—A Field Guide to the Boletes. Hafner Press: New York, NY. 261 p.
Thiers, H.D. & Trappe, J.M. (1969). Studies in the genus Gastroboletus. Brittonia 21: 244-254. (Protologue)
