Genus Hapalopilus P. Karst.

Revue Mycologique Toulouse 3 (9): 18 (1881)

Type: Polyporus nidulans Fr. : Fr., Systema Mycologicum 1: 362 (1821)

Gilbertson and Ryvarden (1986) describe five species for North America. Two of those are in this part of the Midwest. Polyporic acid makes these species poisonous. The reaction with KOH is reddish to violet. Hapalopilus croceus may occur in the Chicago area but is not documented. However that species is now Aurantiporus croceus in the Meruliaceae with Phaeophlebiopsis and Rhizochaete.

  1. Hapalopilus rutilans (H. nidulans ), fairly common in region.
Tradition places it in the Polyporaceae but DNA phylogenies reveal it is in the phlebioid clade.
Taxon links:
17721 MycoBank ; Index Fungorum ; Species Fungorum