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Genus Truncospora Pilát ex Pilát

Acta Musei Nationalis Pragae 9B (2): 108 (1953)

Type: Polyporus ochroleucus Berk., London Journal of Botany 4: 53 (1845)

This genus has both temperate and tropical species. Spirin et al. (2015) examined the Truncospora ohiensis group worldwide and revealed seven species. Five of these are in North America: Truncospora ohiensis widespread in the East; T. arizonica in Arizona on oak; T. floridana in Florida; T. mexicana in Mexico, Texas, Cuba; and T. tropicalis in the Florida Keys, Hispaniola, Puerto Rico. The other two species are T. atlantica in Macaronesia (Canary Islands, Madeira), Iberian Peninsula; and T. ornata in Russian Far East and North-East China. The Truncospora ochroleuca group (Australia, Asia, Africa, Central America) is likely multiple species and needs study.

Zhao et al. (2016) described a new species from Wisconsin: Truncospora wisconsinensis that has white annual brackets, larger pores (3-5 per mm), dimitic hyphal system, and spores smaller than T. ohiensis. This new segregate species should be looked for in the Midwest.

  1. Perenniporia ohiensis is a very small conk on hardwood logs.
Taxonomy:
Truncospora was treated as a synonym of Perenniporia but is now recognized again. The genus Perenniporia is in the process of being split up into multiple genera. The original 1941 publication of Truncospora was invalid because a type species was not designated: Pilát. 1941. Atlas des Champignons de l'Europe, III: Polyporaceae I: 365.
Related links:
Spirin V., J. Kout, J. Vlasák. 2015 (2014). Studies in the Truncospora ohiensisT. ochroleuca group (Polyporales, Basidiomycota). Nova Hedwigia. 100: 159-175. Also available on Research Gate.
Zhao, C-L., F. Xu, D. H. Pfister. 2016. Morphological and molecular identification of a new species of Truncospora (Polyporales, Basidiomycota) in North America. Phytotaxa 257 (1): 89–97.
Taxon links:
18685 MycoBank ; Index Fungorum ; Species Fungorum ; Latin diagnosis on MycoBank