98 PRESENT-DAY GARDENING 



D. caesius (Cheddar Pink) A typical English species, 

 which grows only 3 or 4 inches in height. The flowers 

 are variously rose-coloured. It may be established in gar- 

 dens, either as a plant on walls, or in the rock garden. It 

 does admirably on our chalky soil ; in soils that do not 

 contain lime, some mortar rubble should be added. Its 

 bluish-grey foliage is very pretty, even when the plant is 

 not in flower. 



D. Caryophyllus (Clove Pink). This is the parent type 

 of the garden Carnations and Picotees ; but as a garden 

 plant the type species is very rare, unless the numerous 

 single-flowered forms of the Carnation produced from every 

 packet of seed of the double-flowered varieties may be 

 taken to represent the type. The species used to grow on 

 the walls of Rochester Castle, but it is supposed to be a 

 naturalised plant in Britain, and not indigenous. The 

 flowers are rose and pink coloured of various tints. 



D. caucaseus (Caucasean Pink). The first cultivated 

 plants of this species were raised from seed which Messrs. 

 Loddiges procured from Mount Caucasus. It is figured in 

 the Bot. Mag.y Tab. 795, and later, at Tab. 5215, D. seguieri 

 is figured as a variety of D. caucaseus, which it probably is. 

 D. ruthenicus, D. collinus, and D. montanus are all varieties, 

 or synonyms, of D. caucaseus. 



D. petreus (Rock Pink). A .pretty species with white 

 flowers, borne on erect but slender stems. This species 

 does not differ very materially from D. plumarius, except 

 that the petals are not so finely divided. 



D. plumarius (Garden Pink). This is the original type 

 of the numerous varieties of the Garden Pink. The wild 

 form is a very poor thing, and not worth cultivation. 



