found: Ainsworth/Bisby dict. fungi(truffle, an ascoma, generally subterranean, of Tuber or other Pezizales or Elaphomycetales, or basidioma of Hymenogastrales; about 180 truffle-forming spp. are known ... Périgord (French) -, T. melanosporum)
found: Hall, I.R. The black truffle, c1994:p. 3 (Périgord black truffle (Tuber melanosporum Vitt.))
found: Web. 3(truffle 1a: the edible subterranean fruiting body of various European fungi of the genus Tuber ...)
found: International Conference on Truffles (1992 : L'Aquila, Italy). Tuber, 1993.
found: Pegler, D.N. British truffles : a revision of British hypogeous fungi, 1993.