Synonyms: Acia membranacea; Basidioradulum molare (homotypic); Cerocorticium molare (homotypic); Hydnum membranaceum; Hydnum membranaceum stenodon; Hydnum membranaceum var. dryinum; Hydnum membranaceum var. stenodon; Hydnum membranaceum var. tenuissimum; Hydnum molare; Hydnum rude; Odontia membranacea; Odontia stenodon; Oxydontia stenodon; Radulum membranaceum; Radulum molare (homotypic); Radulum molare var. stramineum; Radulum molare var. sulphureum; Radulum orbiculare var. molare; Radulum rude (heterotypic); Radulum rude f. confluens; Radulum rude f. phlebioides; Radulum rude f. tenuissimum; Sarcodontia stenodon (heterotypic); Sistotrema crustaceum; Sistotrema rude (heterotypic); Xylodon membranaceus