Name: Polyporus umbellatus
Author: (Pers.) Fr.
Citation: Syst. mycol. (Lundae) 1: 354 (1821)
See “Lentinoid and Polyporoid Fungi, Two Generic Conglomerates Containing Important Medicinal Mushrooms in Molecular Perspective” (Zmitrovich & Kovalenko 2016).
Edit: What I said before was too harsh. C. umbellata is phylogenetically distinct from Polyporus sensu stricto but it’s not far off. I don’t see why they shouldn’t be lumped but there seems to be a very solid splitting trend by polyporaceologists.
Zmitrovich & Kovalenko 2016