1) Family tuberaceae 2) Fungus family 
The Tuberaceae ee are a family of mycorrhizal fungi. It includes the genus Tuber, which includes the so-called `true` truffles. It was characterized by the Belgian botanist Barthélemy Charles Joseph du Mortier in 1822. A molecular study of ribosomal DNA by mycologist Kerry O`Donnell in 1997 found that a small clade now redefined as Helvellacea......
Tuberaceae is a family of subterranean fungi of the natural order Ascomyceteae. The family includes the truffle.
[n] - family of fungi whose ascocarps resemble tubers and vary in size from that of an acorn to that of a large apple
family Tuberaceae noun family of fungi whose ascocarps resemble tubers and vary in size from that of an acorn to that of a large apple