The many references to this great genus in preceding chapters will have conveyed an idea of its importance. It includes the Almond, the Cherry, the Apricot, the Plum and the Laurel. It provides many varieties of the utmost value for forcing. The following are the most important for ornamental purposes: Almond section (Amygdalus): Communis is the common pink; flore pleno, double red, and macro-carpa, large pink, are both varieties of it. C. amara is the bitter Almond and C. dulcis the sweet Almond. Davidiana is pale rose; it has a white form, alba. Nanaisthe dwarf Almond. Incanaisthe hoary Almond. Orientalis is the silver Almond. Apricot section: Mume is the Japanese Apricot, dwarf, with white, scented flowers in March; there are double pink and double white forms and various singles. Triloba is pale rose; it has a double form, flore pleno. Tomentosa is white. Bird Cherry section: Padus, white, spring; there is a double form, flore pleno, and also a splendid single called Albertii, with long white spikes like small Lilacs. Mahaleb, white, fragrant; there are yellow-fruited and drooping forms.

Cherry section: (Cerasus). Avium is the wild Cherry or Gean, white; there is a double form, flore pleno; and a large-leaved, decumana. Cerasus, the common Cherry; there is a splendid double white form of this called Rhexii flore pleno. Japonica (syn. sinensis) the Japanese Cherry, white; does best when pruned hard after flowering; there are double white and double rose forms. Pseudo-cerasus, the Bastard Cherry; there is a splendid double pink form of this called James H. Veitch and a beautiful blush, larger and even freer than the preceding, named Shirofugen. Serrulata, white. Pumila, dwarf, white. Peach section: Persica, rose, the Peach; there is a good double red form of this called Clara Mayer; there are also double rose, double white and purple-leaved forms. Plum section: Cerasifera, the Myrobalan or Cherry Plum; the dark-leaved form of this named atro-purpurea is the same as Prunus Pissardii; there is a beautiful sub-form called Hessei, the narrow leaves of which vary a good deal in colour; and also a sub-form named Moseri flore pleno, with double rose flowers. Spinosa, the Sloe; there is a double white form and also a dark-leaved, purpurea. For forcing the foregoing, see Chapter 26. Laurel section: Laurocerasus, the common Laurel; and Lusitanica, the Portugal Laurel (see Laurels). For other references to the genus Prunus see the various chapters. A distinct Prunus with glaucous grey leaves and cherrylike fruit is Besseyi.