... species is Polyporus corylinus, Mauri., procured artificially in Rome from charred stumps of the cob-nut tree. [r] Of true Polyporus, only two or three species have been regarded favourably as esculents. ... with. Truffles are no longer regarded as aphrodisiacs. For other uses, we can only allude to amadou, or German tinder, which is prepared in Northern Europe from Polyporus fomentarius, Fr., cut ... are esculent, but very rare in England. The latter is not uncommon in Austria and Italy, the former in Germany, Switzerland, and France. Hydnum erinaceum, Bull, is eaten in Germany[x] and France....