266 Encyclopaedia of Gardening 



crimson, 18 ins., late spring (Bot. Mag., t. 5916); marginata, violet, 

 3 ins., late spring (Bot. Mag., t. 191); minima, pale rose, 2 ins., 

 summer (Botanical Register, t. 581); rosea, rose, 6 ins., spring (Bet. 

 Mag., t. 6437); Sikkimensis, yellow, 2 ft., summer (Bot. Mag., 

 t. 4597); Sieboldii, various colours, 9 ins., spring; viscosa (syn. 

 villosa), rose, 3 ins., summer (Bot. Mag., t. 14). The following are 

 interesting newer species : Bulleyana, orange, i ft. ; Cockburniana, 

 scarlet, a biennial, best raised from seed annually; Forresti, orange, 

 I ft., fragrant; Listen, lilac, 6 ins., and white variety ; Littoniana, 

 lilac to purple, i ft. ; malacoides, lilac, 6 ins. ; pulverulenta, violet, 

 resembles Japonica; Veitchii, rose, like cortusoides; and Winteri, 

 lavender, powdered leaves. Unique and Lissadell Hybrid are 

 beautiful crosses between Cockburniana and pulverulenta. The 

 following are pretty greenhouse species: floribuncla, yellow, 6 ins., 

 spring (Bot. Mag., t. 6712); Forbesii, lilac, yellow eye, 6 ins., 

 summer; kewensis, a hybrid between verticillata and floribunda, 

 yellow, i ft., spring; verticillata, yellow, 18 ins., spring (Bot. 

 Mag., t. 2842). The double border Primroses, Polyanthuses, 

 Oxlips, and Auriculas are easily raised from seed in spring, and 

 may be planted in autumn to make beautiful spring beds. They 

 may be divided after flowering (see preceding page). The Primrose 

 is Primula vulgaris (syn. acaulis), the Auricula is P. Auricula (Bot. 

 Mag., t. 6837), the Polyanthus is a hybrid between Primrose and 

 Cowslip, the Oxlip is P. elatior, the Cowslip is P. officinalis (syn. veris). 



Privet (Ligustrum). See Hedge and Ligustrum. 



Prunella, Self-heal (prune-lla, from the German Die Breaune, 

 medicinal. Ord. Labiatae). Hardy perennials, of which the best 

 known is grandiflora, with purplish-mauve flowers in summer, 

 height 6 ins. It is easily grown in the rock garden, and may be 

 propagated by division in spring. 



Pruning. See Fruit. 



Prunus (prii-nus, from prune, a Plum. Ord. Rosaceae). A large 

 and highly important genus, including as it does such fruits as the 

 Apricot, Cherry, Peach, and Plum; such handsome trees as the 

 Almond; and such shrubs as the Laurel. P. Amygdalus is the 

 Almond, P. Armeniaca the Apricot, P. Cerasus the Cherry, P. Per- 

 sica the Peach (with which is included the Nectarine), and P. com- 

 munis the Plum. The fruits are dealt with under Fruit. Several 

 of the Prunuses are grown as ornamental plants, and among these 

 may be named the double red variety of Persica called Clara Meyer; 

 triloba and its double variety, which is a beautiful little tree for 

 forcing in pots; cerasifera atropurpurea (syn. Pissardii), a small 

 tree with purple leaves, good as a standard for the shrubbery and 

 lawn; Cerasus Rhexii flore pleno, the double white Cherry; pseudo- 

 cerasus (syn. Watered) and its fine dark variety James H. Veitch. 

 All these may be grown in pots and gently forced into bloom in 

 winter or early spring. Loam, with sand and a third of decayed 

 manure, will suit them. They are also good for the shrubbery. 



Pseudo-bulb. The swollen, bulb-like stem of an Orchid. 



