[AS.] A genus of trees of the Olive family, mostly natives of Europe and of North America. There are about fifty species. The common ash is a beautiful and umbrageous tree, highly ornamental in parks, growing generally with a smooth stem to a height of from 100 150 feet, its wood being white, tough, and hard, in value next to that of the oak, and much used by wheelwrights, coachmakers, joiners, and turners. Among other varieties, the weeping ash, the curl-leaved ash, and the entire-leaved ash may be mentioned. The most important ones in the United States are the white ash, the black ash, the red ash, the blue ash, and the swamp ash. The white ash has the best wood* and is used for the same purposes as that of the common ash. The manna of commerce is a sugar from the sap of the manna ash, a kind of ash tree growing in Southern Europe, especially in Sicily, whence the finest manna is obtained.