Genus Antrodia P. Karst.

Meddelanden af Societas pro Fauna et Flora Fennica 5: 40 (1879)

Type species: Polyporus serpens Fr., Observationes mycologicae 2: 265 (1818)

Gilbertson and Ryvarden (1986) describe 20 species of Antrodia for North America. They restrict the genus to ones causing a brown rot. Characters for the genus include generative hyphae with clamps, skeletal hyphae (dimitic hyphal system), and spores that are hyaline, thin-walled, smooth, non-amyloid, and cylindrical to oblong ellipsoid. This genus is poorly known for the Chicago Region. We are just beginning to determine which species are present. I have been calling some of them waterfall polypore for the way the pores cascade down the wood surface. The following species are likely to be here on hardwood, based on Gilbertson and Ryvarden (1986) and Spirin et al. (2013). The last two (*) are excluded from Antrodia in the strict sense.

  1. Antrodia favescens, pale brown; brackets often single and not fusing together.
  2. Antrodia heteromorpha, white to pale brown; pores large, angular to maze-like.
  3. *Antrodia malicola, even pale brown color; often narrow elongated pileus.
  4. *Antrodia serialis, pale brown, pores white to buff; nodulose or imbricate.
Molecular phylogenies (see links below) show that the genus Antrodia in the broad sense is polyphyletic. It is scattered across multiple clades in combination with other genera, such as Fomitopsis and Daedalea. A new, most restricted, sense for Antrodia centers around its type species and includes: A. favescens, A. heteromorpha, A. macra (Europe), A. mappa, A. serpens (Europe), A. tanakai (Eurasia), and several undescribed tropical species. The species in the A. heteromorpha group have large pores and were classified in Daedalea by Fries. The species concepts became confused over time but are now clarified in Spirin et al. (2013). Antrodia albida is considered a synonym of A. heteromorpha. The synonymy on Index Fungorum and Mycobank has not been updated to reflect this new work.
Related links:
Ortiz-Santana, Lindner, Miettinen, Justo, and Hibbett. 2013. A phylogenetic overview of the antrodia clade (Basidiomycota, Polyporales). Mycologia 105(6): 1391-1411.
Spirin, Vlasák, Niemelä, and Miettinen. 2013. What is Antrodia sensu stricto? Mycologia 105(6): 1555-1576.
Taxon links:
17083 MycoBank ; Index Fungorum ; Species Fungorum

Note. I am treating the genus in the broad sense until the excluded species find a home elsewhere.