Gray Bolete Retiboletus griseus (Frost) Manfr. Binder & Bresinsky    Synonyms: Boletus griseus.
Kingdom Fungi   >   Phylum Basidiomycota   >   Class Agaricomycetes   >   Order Boletales   >   Family Boletaceae   >   Genus Retiboletus   

Status:

Found scattered on ground in mixed, mostly oak, forests.

Description:

Cap: varying shades of brown / gray, dry, convex to almost flat; flesh whitish. Pores: White to gray-brown; may bruise more intense brown / gray. Stalk: Thick, strong reticulated stalk may show yellow from base up, also when handled; stalk flesh yellow although frequently infested by insects. (J. Solem, pers. comm.)

There are 5 records in the project database.

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Gray Bolete (caps) in Howard Co., Maryland (7/1/2015). Photo by Joanne Solem. (MBP list)

Gray Bolete in Howard Co., Maryland (8/17/2011). Image features young fruiting bodies showing varying amounts of yellow on strongly reticulated stalks. Photo by Robert Solem. (MBP list)

Gray Bolete in Howard Co., Maryland (7/1/2015). Image features fruiting body showing flesh, pores, and stalk. Photo by Joanne Solem. (MBP list)

Gray Bolete in Howard Co., Maryland (7/1/2015). (c) Joanne and Robert Solem, some rights reserved (CC BY-NC). Photo by Joanne Solem. (MBP list)

Gray Bolete in Howard Co., Maryland (7/1/2015). (c) Joanne and Robert Solem, some rights reserved (CC BY-NC). Photo by Joanne Solem. (MBP list)

Spores of Gray Bolete in Howard Co., Maryland (7/1/2015). (c) Joanne and Robert Solem, some rights reserved (CC BY-NC). Photo by Joanne Solem. (MBP list)

Spores collected from a Gray Bolete specimen in Howard Co., Maryland (7/1/2015). Semifusiform, smooth; measured 10.5-11.3 X 3.4-3.8 microns. Photo by Robert Solem. (MBP list)


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