Encyclopaedia of Gardening 277 



away the growing germ, how the Brier is slit to receive it, how it is 

 slid in, and how it is tied. It is an interesting little art, well worth 

 learning. Cuttings may be struck in September; see page 275. 



Mildew on Roses. Both dwarf and climbing Roses are apt to be 

 disfigured by mildew, although it does not often attack the shiny- 

 leaved varieties. It should be checked directly the white patches 

 show on the leaves by dusting on flowers of sulphur through a 

 small pair of bellows, or by syringing with fresh liver of sulphur 

 (sulphide of potassium) dissolved in water at the rate of half an 

 ounce per gallon. 



Rose Acacia. See Robinia hispida. 

 Rose Bay. See Epilobium angustifolium. 

 Rose Campion. See Lychnis. 



Rosemary, Rosmarinus officinalis (rosmari-nus. Ord. Labiatae). 

 The leaves of Rosemary contain an essential oil, which is used by 

 makers of perfumes and hair washes. It is a shrub growing 3 to 

 4 ft. high, and thriving in friable loamy soil. Propagation is by 

 seeds in spring, also by cuttings in spring and layers in summer. 



Rose of Heaven, Lychnis coeli-Rosa. 

 Rose of the World, Camellia Japonica. 

 Rotation of Crops. See Kitchen Garden. 

 Rowan, Pyrus Aucuparia (Mountain Ash). 

 Royal Bay, Laurus nobilis. 

 Royal Fern, Osmunda regalis. 



Rubus, Bramble (ru-bus, from rub, red, in allusion to the fruit. 

 Ord. Rosaceae). Deciduous shrubs and herbaceous plants, in some 

 cases of coarse, rampant habit, as in the Blackberry. Several are 

 well worth growing in the flower garden. Arcticus, herbaceous, 

 which grows only a few inches high and has pink flowers in early 

 summer, is worth growing on the rockery (see the Botanical Maga- 

 zine, t. 132) ; there is a fruiting form of it called secundus. Biflorus, 

 a tall species with white flowers in May (Bot. Mag., t. 4678), has 

 white stems. Chamaemorus, herbaceous, 6 to 9 ins. high, white 

 flowers in summer, is the Cloudberry. Deliciosus is a beautiful 

 shrub, with large white flowers in May. It grows 5 to 6 ft. high, and 

 is spineless; the fruit is edible. Idaeus is the Raspberry (see Fruit). 

 Laciniatus is the Parsley-leaved Blackberry (see Fruit). Phoeni- 

 colasius, with pink flowers followed by red fruit, which makes a nice 

 preserve, is the Wineberry. Rosaefolius coronarius (single form) is 

 the Strawberry-Raspberry (see Fruit). The Rubuses like a deep, 

 rich, moist soil. The shrubs may be propagated by layering the 

 tips of the canes, the herbaceous species by division. 



Rudbeckia, Cone Flower (rudbeck-ia, after O. Rudbeck. Ord. 

 Compositae). The most useful species are hardy herbaceous plants 

 with composite flowers, the centres of which are raised and the ray 

 florets drooping. Grandiflora, yellow and purple, late summer, 3 to 

 4 ft.; laciniata, yellow and green, summer, 4 to 6 ft.; 1. Golden 



