264 GENERAL REVIEW. 



Messrs Rovelli of Pallanza, so we may now expect perfect 

 seeds for the first time in Europe. Nearly all the Abies or 

 Firs take kindly to the common Spruce as a stock ; while 

 Biotas and Thujas, as a rule, succeed well on the Chinese 

 Arborvitse. In the 'Revue Horticole/ 1867, M. Briot states 

 that Libocedrus tetragona succeeds as a scion on Saxegothaa ; 

 and its habit, in consequence, becomes changed into a wide- 

 spreading head instead of forming a narrow cylindrical column. 

 Chamcecyparis obtusa pygmcea, grafted on C. JBoursieri, grows 

 erect; while if worked on Biota or Thuja, or if propagated 

 from cuttings, the plants spread horizontally on the ground. 

 Pseudolarix Kczmpferi is best propagated by grafting scions 

 on its own roots, moderately thick pieces well furnished with 

 fibres giving the best results. This mode might be used with 

 advantage in the case of other rare Conifers which are 

 difficult to propagate by cuttings. Salisburia being a dioecious 

 Conifer, grafting here, as in the Aucuba, serves to unite the 

 two sexes on the same plant, and thus insure its fertility. S. 

 biloba, from cuttings or seed, forms a good stock cleft-grafting 

 in March in the open air, or side-grafting in August under 

 glass, being alike successful. Grafting is largely practised in 

 most of the trade collections of Coniferas, especially for the 

 multiplication of variegated or distinct varieties of any species. 

 Some cultivators object to grafted specimens of Coniferae ; but 

 while acknowledging seedlings to be preferable as a rule, one 

 cannot gainsay the evidence afforded by the fine grafted speci- 

 mens worked by Mr Fowler at Castle Kennedy, and other 

 well-known cultivators of these ornamental plants and trees. 



Stocks for Conifers. The following list of Conifers will not 

 only be of assistance to the propagator, but also shows the 

 natural affinity of the best known types of Conifers at a 

 glance : 



Scions or Grafts. Stocks. 



Araucarias A. imbricata or A. excelsa. 



Cedar Cedrus atlantica or Larch. 



Chamaecyparis Thuja sinensis, T. canadensis, or T. occidentalis. 



Retinospora Biota orientalis or T. occidentalis. 



Thujopsis Biota orientalis or the last-named Thuja. 



Cryptomeria Cryptomeria japonica. 



Cypress Cupressus pyramidalis or Biota. 



Juniper Juniper virginiana. 



Salisburia Salisburia biloba from seed. 



Yew, variegated Yew seedlings, the Irish yew being preferable. 



Cephalotaxus Cephalotaxus. 



Torreya Torreya seedlings or cuttings. 



Libocedrus Thuja sinensis (seed). 



Larch European or American Larch (seed). 



