Boletus sordidus Frost

Description

Protologue: Pileus pulivinate, dirty dark brown, subtomentose, about 2 inches broad. Tubes at first white, long, not quite adnate, turning bluish green. Stem brownish, streaked very dark, smaller as it enters the pileus, generally green around the part not adnate. Flesh white, now and then tinged with green. Spores .0126–.0052 m.m. On recent excavations in woods. July.

Type: Wolfe (1979. Bibliotheca Mycologica 69: 53.) designated an authentic Frost specimen in FH as LECTOTYPE. Other authentic Frost specimens are in BUF, NYS, and VT.