Under the natural classification of plants the almond belongs to the order _Rosaceæ_, and in the tribe _Drupaceæ_. Linnæus placed the peach and almond in the same genus, and they are now generally considered to be only varieties of one species,--the wild almond tree is probably the parent from which all the cultivated peaches and nectarines have descended. In most of our modern botanical works these fruits are classed as a sub-section of _Prunus_, the plum. They are mainly deciduous shrubs, or small trees. The flowers are variable, both in size and color; but in the almond they are usually somewhat larger than in the peach, almost sessile, and from separate scaly buds on the shoots of the preceding season, appearing in early spring, before or with the unfolding leaves, the latter being folded lengthwise in the bud. Leaves three to four inches long, tapering, finely serrate, with few or no glands at the base of the blade, as seen in many varieties of the common peach. Fruit clothed with a fine dense pubescence in both peach and almond; but in the latter the pulpy envelope becomes dry and fibrous at maturity, cracking open irregularly, allowing the rough and deeply indented nuts to drop out; while in the peach the pulpy part becomes soft, juicy and edible, the reverse of the almond. The nectarine is only a smooth-skinned peach. =History of the Almond.=--As with most of our long-cultivated fruits and nut trees, very little is now known of the early history or origin of the almond, and even its native country has not been positively determined, although it is supposed to be indigenous to parts of Northern Africa and the mountainous region of Asia. Theophrastus, who wrote a history of plants about three centuries before the Christian era, mentions the almond as the only tree in Greece that produces blossoms before the leaves. From Greece it was introduced into Italy, where the nuts were called _nuces græcæ_, or Greek nuts. Columella, about the middle of the first century of our era, was the earliest Roman writer to mention the almond as distinct from the peach. From Italy this nut was slowly disseminated, making its way northward mainly through France, reaching Great Britain as late as 1538 (_Hortus Kewensis_). But its cultivation has never extended in Britain, beyond sheltered gardens and orchard houses, owing to the cool and otherwise uncongenial climate, and the same is true of Northern France and other regions to the eastward in Europe. But in the south of France, also in Italy, Spain, Sicily, and throughout the Mediterranean countries, both in Europe and Africa, the almond thrives, and has long been extensively cultivated. These nuts are an important article of commerce, immense quantities being exported by Spain, mainly from Valencia, while the so-called Jordan almond comes from Malaga, as very few are raised in the valley of the Jordan. Bitter almonds come principally from Mogador in Morocco.