The cultivation of the pear extends to the remotest
antiquity. Traces of it have been found in the Swiss
lake-dwellings; it is mentioned in the oldest Greek
writings, and was cultivated by the Romans. The word "pear"
or its equivalent occurs in all the Celtic languages, while
in Slavonic and other dialects different appellations, but
still referring to the same thing, are found—a diversity and
multiplicity of nomenclature which led Alphonse de Candolle
to infer a very ancient cultivation of the tree from the
shores of the Caspian to those of the Atlantic.
A certain race of pears, with white down on the under
surface of their leaves, is supposed to have originated from
P. nivalis, and their fruit is chiefly used in France in the
manufacture of Perry (see Cider). Other small-fruited pears,
distinguished by their precocity and apple-like fruit, may
be referred to P. cordata, a species found wild in western
France, and in Devonshire and Cornwall. Pears have been
cultivated in China for approximately 3000 years. -- from
Wikipedia



