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The genus Laetiporus was described by Murrill (1904) typified by Agaricus speciosus Battarra [= Polyporus sulphureus (Bull.: Fr.)] as a monotypic genus. The type species, L. sulphureus (Bull.: Fr.) Murrill, is characterized by the bright orange to yellow colored pileus, soft and fleshy context and dimitic hyphal system with simple septate generative and binding hyphae. Laetiporus sulphureus (L. sulphureus sensu lato) has been considered a cosmopolitan species distributed from boreal to tropical zones (Gilbertson & Ryvarden 1986; Hood 2003; Núñez & Ryvarden 2001; Ryvarden & Gilbertson 1993; Ryvarden & Johansen 1980). In addition to L. sulphureus s. l., the following species with different colorations and/or morphologies are accepted in Laetiporus on the basis of the hyphal characters and the decay type: L. baudonii (Pat.) Ryvarden, L. persicinus (Berk. & M.A. Curtis) Gilb., L. portentosus (Berk.) Rajchenb. (Gilbertson 1981; Ryvarden 1991; Rajchenberg 1995). However, a recent phylogenetic study showed that Laetiporus was not monophyletic and at least L. persicinus and L. portentosus fell outside the “core Laetiporus clade” (Lindner & Banik 2008).

Here, descriptions and an interactive multi-access key to identify "core Laetiporus" species known from East Asia, Europe and North America (Burdsall & Banik 2001; Ota et al. in preparation) are provided.


  • Burdsall HH, Banik MT, 2001. The genus Laetiporus in North America. Harvard Papers in Botany 6: 43-55.
  • Gilbertson RL 1981. North American wood-rotting fungi that cause brown rots. Mycotaxon 12: 372-416.
  • Gilbertson RL, Ryvarden L, 1986. North American polypores. 1. Fungiflora, Oslo, Norway.
  • Hood I, 2003. An introduction to fungi on wood in Queensland. The University of New England School of Environmental Sciences and Natural Resources Management, Armidale.
  • Lindner D, Banik M, 2008. Molecular phylogeny of Laetiporus and other brown rot polypore genera in North America. Mycologia 100: 417-430.
  • Murrill WA, 1904. The Polyporaceae of North America IX. Inonotus, Sesia and monotypic genera. Bulletin of the Torrey Botanical Club 31: 593-610.
  • Núñez M, Ryvarden L, 2001. East Asian Polypores. Volume 2. Polyporaceae s. lato. Fungiflora, Oslo.
  • Overholts LO, 1953. The polyporaceae of the United States, Alaska and Canada. Ann Arbor University of Michigan Press, London.
  • Rajchenberg M, 1995. A taxonomic study of the subantarctic Piptoporus (Polyporaceae, Basidiomycetes) II. Nordic Journal of Botany 15:1 05-119.
  • Ryvarden L, 1991. Genera of polypores. Nomenclature and taxonomy. Fungiflora, Oslo.
  • Ryvarden L, Johansen I, 1980. A preliminary polypore flora of East Africa. Fungiflora, Oslo.
  • Ryvarden L, Gilbertson RL, 1993. European polypores. Fungiflora, Oslo.

Characters (Polypores)