Hapalopilus eupatorii (P. Karst.) Spirin & Miettinen

Miettinen, Otto, Spirin, Viacheslav, Vlasak, Josef, Rivoire, Bernard, Stenroos, Soili & Hibbett, David S., 2016, Polypores and genus concepts in Phanerochaetaceae (Polyporales, Basidiomycota), MycoKeys 17, pp. 1-46 : 11

Hapalopilus eupatorii (P. Karst.) Spirin & Miettinen comb. nov. Figures 5band 6e

Physisporus eupatorii P. Karst., Revue Mycol. 6: 214 (1884).

Ceriporiopsis herbicola Fortey & Ryvarden.

Remarks.

Hapalopilus eupatorii has completely resupinate, thin basidiocarps on dead herbaceous stems ( Arctium , Eupatorium , and Reynoutria ). It has been recorded once on thin fallen branches of Robinia in a thicket of Reynoutria . Karsten (1884) described the species from France as Physisporus eupatorii , but it long remained an enigma for mycologists ( Lowe 1956, Donk 1974). Recently it was reported from England as Ceriporiopsis herbicola ( Fortey and Ryvarden 2007) and Germany as Hapalopilus nidulans f. resupinata ( Dämmrich 2014).