120 TREES AND SHRUBS 



the three latter species, in fact, including all the 

 various plants more commonly known under the 

 generic title of Retinospora. The species should 

 be raised from seed, which is easily obtainable and 

 germinates readily, or in default they will root from 

 cuttings. The varieties, with a few exceptions, are 

 quickly propagated by cuttings, those that require 

 to be grafted being C. lawsoniana var. lutea, the 

 variegated forms of C. nootkatensis, and C. obtusa 

 vars. nana, nana aurea, and filifera aurea. The 

 forms of C. thyoides also do well when raised from 

 layers. We must not omit also such varieties of 

 C. lawsoniana as Fraseri, Allumi, and one known in 

 nurseries as Milford Blue Jacket. 



THUYA. These are propagated in much the same 

 way as the Cupressus, viz., the species by seeds, and 

 the varieties by cuttings or by grafting in the case of 

 the one or two highly variegated forms. Some of 

 the green or glaucous varieties of both Cupressus 

 and Thuya will come fairly true from seed, from 

 40 per cent, to 70 per cent, being the usual quantity 

 of seedlings true to name. Variegated forms from 

 seed either come green or a mongrel mixture of 

 green and variegated. 



LIBOCEDRUS. This should be raised from seed, 

 as when grafted on Thuya orientalis a too common 

 method of propagation it makes a miserable speci- 

 men. The middle pair of scales in the cone of 

 Libocedrus alone contain fertile seeds. L. doniana 

 is a tender species. 



SCIADOPITYS and TAXODIUM These can only be 



