Crassane. Origin Europe. Very old; cultivated as early as 1667. Synonyms: Bergamot Crassane, Bergamote Crassanne, Bergamotte Crassane, Bergamotte Crassane d'Automne, Beurre Plat (Flat Butter Pear), Crasane, Crassane d'Automne, Crassane Bergamot, Crassanne,Crassanne Bergamot, Crassanne Burgamot Cresane, Flat Butter. -- W.H. Ragan, Nomenclature of the Pear, 1908.Crassane, or Bergamotte Crasanne. This pear is among the most estimable varieties; it is generally of the medium size, but on young trees and right ground it sometimes grows large, it is of the Bergamotte shape, rather round, the skin when ripe a greenish yellow, full of distinct black dots, very thin and tender: the flesh is singularly melting, rich, juicy and sweet, but not sprightly - it is sometimes in France called the flat Beurree; it ripens in October after the yellow Beurree (White Doyenne), and with care in gathering it from the tree when dry, will keep a month or six weeks in the house: it is a great bearer of vigorous growth, and hardy; I know of few pears more deserving extensive cultivation. -- W. Coxe, A view of the cultivation of fruit trees, 1817.