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Prunus (ancient Latin name of plum). Rosaceae. The Stone-fruits, as Plum. Cherry. Peach, Nectarine, Apricot, Almond. Pink-flowered and white-flowered shrubs and trees of wide distribution, grown for fruit, and also for ornamental foliage and flowers.

Prunus (ancient Latin name of plum). Rosaceae. The Stone-fruits, as Plum. Cherry. Peach, Nectarine, Apricot, Almond. Pink-flowered and white-flowered shrubs and trees of wide distribution, grown for fruit, and also for ornamental foliage and flowers.

are on a wild stock called the Mazakura (P. Lannesiana) which grows easily from cuttings and according to experiments made by the Department of Agriculture is almost immune to the cherry leaf-spot. As the grafting is at the surface of the ground, and as the trunks of the trees are the parts winter-killed, it is yet an open ques-tion as to whether the substitution of a longer-lived hardier stock would produce hardier longer-lived trees. E. H. Wilson, of the Arnold Arboretum, who has made a critical study of the Japanese cherries both in the Orient and at the Arboretum, thinks it will, and has suggested the trial for this purpose of P. serrulata var. sachalinensis. The Mazakura grows readily from cut- tings, but P. serrulata. var. sachalinensis does not. Budshave been successfully placed on the latter, and we shall be able to determine whether the stock transmits a greater longevity to them. With the tests being made by the Arnold Arboretum, the Department of Agricul-ture and in New York city, and the botanical studies of Wilson and Miyoshi, we should soon have a reliable planting of these very desirable oriental cherries. In anticipation of this, the names of many of the Japanese forms have been inserted in the following systematic account, although one may expect variations in the rendering of them into English.  

are on a wild stock called the Mazakura (P. Lannesiana) which grows easily from cuttings and according to experiments made by the Department of Agriculture is almost immune to the cherry leaf-spot. As the grafting is at the surface of the ground, and as the trunks of the trees are the parts winter-killed, it is yet an open ques-tion as to whether the substitution of a longer-lived hardier stock would produce hardier longer-lived trees. E. H. Wilson, of the Arnold Arboretum, who has made a critical study of the Japanese cherries both in the Orient and at the Arboretum, thinks it will, and has suggested the trial for this purpose of P. serrulata var. sachalinensis. The Mazakura grows readily from cut- tings, but P. serrulata. var. sachalinensis does not. Budshave been successfully placed on the latter, and we shall be able to determine whether the stock transmits a greater longevity to them. With the tests being made by the Arnold Arboretum, the Department of Agricul-ture and in New York city, and the botanical studies of Wilson and Miyoshi, we should soon have a reliable planting of these very desirable oriental cherries. In anticipation of this, the names of many of the Japanese forms have been inserted in the following systematic account, although one may expect variations in the rendering of them into English.  

In very recent years, the knowledge of the genus has been greatly extended by explorations in China, whence many new species (particularly in the subgenera Cera- sus and Padus) have been derived that will probably find their way into cultivation. The taxonomy of the American native plums has also received much recent attention. Aside from the older writings of Bailey and Waugh on the native edible plums and cherries, see Hedrick,"The Plums of New York," 1911, and "The Cherries of New York," 1915 (also with similar accounts of all other pomological species), and Wight,"Varieties of Plums Derived from Native American Species," Bulletin No. 172, Bureau of Plant Industry, United States Department of Agriculture, 1915, and "Native American Species of Prunus," Bulletin No. 179 (1915). For the oriental Prunus, particularly those native in China, see the work by Koehne and others in "Plantae Wilsonianae," vol. 1, 1911-1913, and Wilson's "Cherries of Japan" (1916), published by the Arnold Arboretum, Boston. As this writing is being closed in the printery, a paper on the Japanese cherries appears in Japan: Miyoshi, "Japanische Bergkirschen, in Journ. Coll.Sci. Tokyo, vol. 34, art. 1 (1916) with eighty-nine colored figures.

In very recent years, the knowledge of the genus has been greatly extended by explorations in China, whence many new species (particularly in the subgenera Cera- sus and Padus) have been derived that will probably find their way into cultivation. The taxonomy of the American native plums has also received much recent attention. Aside from the older writings of Bailey and Waugh on the native edible plums and cherries, see Hedrick,"The Plums of New York," 1911, and "The Cherries of New York," 1915 (also with similar accounts of all other pomological species), and Wight,"Varieties of Plums Derived from Native American Species," Bulletin No. 172, Bureau of Plant Industry, United States Department of Agriculture, 1915, and "Native American Species of Prunus," Bulletin No. 179 (1915). For the oriental Prunus, particularly those native in China, see the work by Koehne and others in "Plantae Wilsonianae," vol. 1, 1911-1913, and Wilson's "Cherries of Japan" (1916), published by the Arnold Arboretum, Boston. As this writing is being closed in the printery, a paper on the Japanese cherries appears in Japan: Miyoshi, "Japanische Bergkirschen, in Journ. Coll.Sci. Tokyo, vol. 34, art. 1 (1916) with eighty-nine colored figures.

Index.

Index.

'''Prunus''' is a [[genus]] of [[tree]]s and [[shrub]]s, including the [[plum]]s, [[cherry|cherries]], [[peach]]es, [[apricot]]s and [[almond]]s. It is traditionally placed within the [[rose]] family [[Rosaceae]] as a [[subfamily]], the [[Prunoideae]] (or [[Amygdaloideae]]), but sometimes placed in its own family, the [[Prunaceae]] (or Amygdalaceae). There are several hundred species of ''Prunus'', spread throughout the northern temperate regions of the globe.  

'''Prunus''' is a [[genus]] of [[tree]]s and [[shrub]]s, including the [[plum]]s, [[cherry|cherries]], [[peach]]es, [[apricot]]s and [[almond]]s. It is traditionally placed within the [[rose]] family [[Rosaceae]] as a [[subfamily]], the [[Prunoideae]] (or [[Amygdaloideae]]), but sometimes placed in its own family, the [[Prunaceae]] (or Amygdalaceae). There are several hundred species of ''Prunus'', spread throughout the northern temperate regions of the globe.  

The flowers are usually white to pink, with five [[petal]]s and five [[sepal]]s. They are borne singly, or in [[umbel]]s of two to six or more on [[raceme]]s. The fruit of all ''Prunus'' species is a [[drupe]] with a relatively large "stone". Leaves are simple and usually [[leaf shape|lanceolate]], unlobed and toothed along the margin.  

The flowers are usually white to pink, with five [[petal]]s and five [[sepal]]s. They are borne singly, or in [[umbel]]s of two to six or more on [[raceme]]s. The fruit of all ''Prunus'' species is a [[drupe]] with a relatively large "stone". Leaves are simple and usually [[leaf shape|lanceolate]], unlobed and toothed along the margin.  

==Classification==

==Classification==

==Uses==

==Uses==

The genus ''Prunus'' includes the [[almond]], [[apricot]], [[cherry]], [[peach]] and [[plum]], all of which have [[cultivar]]s developed for commercial [[fruit]] production. The edible part of the almond is the seed; the almond fruit is a drupe and not a "[[Nut (fruit)|nut]]". There are also a number of species, [[hybrid]]s, and [[cultivar]]s grown strictly as [[ornamental plant]]s, usually for their profusion of flowers, occasionally for leaves and bark. These ornamentals include the group that may be collectively called ''flowering cherries''.

The genus ''Prunus'' includes the [[almond]], [[apricot]], [[cherry]], [[peach]] and [[plum]], all of which have [[cultivar]]s developed for commercial [[fruit]] production. The edible part of the almond is the seed; the almond fruit is a drupe and not a "[[Nut (fruit)|nut]]". There are also a number of species, [[hybrid]]s, and [[cultivar]]s grown strictly as [[ornamental plant]]s, usually for their profusion of flowers, occasionally for leaves and bark. These ornamentals include the group that may be collectively called ''flowering cherries''.

[[Pygeum]] is a herbal remedy containing extracts from the bark of ''[[Prunus africana]]''. It is used as to alleviate some of the discomfort caused by inflammation in patients suffering from [[benign prostatic hyperplasia]].

[[Pygeum]] is a herbal remedy containing extracts from the bark of ''[[Prunus africana]]''. It is used as to alleviate some of the discomfort caused by inflammation in patients suffering from [[benign prostatic hyperplasia]].