MYCOTAXON Volume LX
MYCOTAXON Volume LX. pp. 387-395 OclOber-December 1996 BRIDGEOPORUS, A NEW GENUS TO ACCOMMODATE OXYPORUS NOBILISSIMUS (BASIDIOMYCOTINA, POL YPORACEAE) Harold H. Burdsall, Jr., Thomas J. Volk, Center for Forest Mycology Research, Forest Products Laboratory *, Forest Service, United States Department of Agriculture, One Gifford Pinchot Dr. , Madison, WI 53705 USA & Joseph F. Ammirati, Jr. Department of Botany. KB -15 , Uni versity of Washington, SeaUle W A 98195 USA ABSTRACT: The new genus Bridgeoporus is proposed to accommodate Oxyporus fJ obiUss;mus W.B. Cooke . Bridgeoporus is associated with a browo rot of wood, as opposed to the superfi cially similar genera Oxyporus and Rigidoporus, which are associated with while rot. Bridgeoporus lacks clamp connec tions at th e septa, is monomitic, possesses pseudocystidia , and bas a unique configuration of fascicles o f hyphae making up the upper surface of its pileus. Thi s combination of characters is found in no previously described genus . * The Forest Products Lab is maintained in cooperati on with the Uni versity of Wi scoosin 4 Madison. This publicati on was written and prepared by U.S. government employees 0 0 official time, and it is therefore in the public domain and not subject to copyright. INTRODUCTION Oxyporus lIohilissimus W.B. Cooke (Cooke, 1949) has aUracted a great deal of aUention in the past several years (Christy, 1991; Coombs, 1991) because o f its large size, uncommon occurrence, unique appeardDce, and associalion with very large host trees. Commonly called the "Fuzzy Sandozi ," it has been reported infrequently (WTU Herbarium records; Trappe, 1990; Christy, 1991) since its discovery in 1943.
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