Gyrodon merulioides

(Schweinitz) Singer

=Boletinellus merulioides (Schweinitz) Murrill

Photograph by T. J. Baroni 1998

Growing with ash (Fraxinus americanus) this common bolete was long thought to be mycorrhizal with ash but it is now thought to be dependant on an aphid associated with this tree. Irregular in shape and somewhat variable in color (brown, olivaceous brown, tarnished brass color), it has a very short lateral stipe and shallow, honey-comb like pores. It forms sclerotia in culture and in nature, as do other members of this genus, for example, Gyrodon monticola Singer (Halling, 1989).

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