238 PROPAGATION OF PLANTS. 



usually preferred as a stock upon which to work both the 

 two-leaved and the three-leaved species. The common 

 Eed or Norway Pine (P. resinosa), is one of the very best 

 of the two-leaved species as a stock for other closely allied 

 species and varieties. The common White Pine (P. 

 Strobus), is the best stock for all of the five-leaved species, 

 such as P. flexilis, P. excslsa, P. Cembra, P. Mandshur- 

 ica, etc., etc. 



The Junipers (Juniper us), are rarely propagated by 

 grafting, as they are readily multiplied by seeds and cut- 

 tings ; but almost any of the strong-growing species, like 

 /. Virginiana, will make good stocks for the varieties of 

 feeble and strong-growing kinds. For the Arbor Vitaes, 

 including the Biotas, Thujas and Retinisporas, the com- 

 mon American species (Thuja occidentalis), may be em- 

 ployed in preference to any other. For the Piceas or 

 Spruces, the commom Norway Spruce is one of the 

 best for stocks, as it is a very free-growing, hardy 

 tree, and thrives in a great variety of soils. The 

 true Cedars (Cedrus), such as the Cedar of Lebanon 

 (C. Libani) and Deodar Cedar (C. Deodara), may 

 bs grafted on seedlings of their own species, or on 

 those of the Mt. Atlas Cedar (C. Atlantica). European 

 nurserymen prefer the latter when they can be obtained. 

 For the Hemlock Spruces or Tsugas, the common North 

 American species (T. Canadensis), is probably the best 

 for stocks, it being one of the most hardy of the genus. 

 The Larches (Larix), including the False Larch (Pseu- 

 dolarix), are grafted on stocks of the common Larch, 

 the European species (L. Europcea), being usually em- 

 ployed for this purpose. The oriental Cypress ( Glypto- 

 strobus), is so closely related to the common Cypress 

 of our Southern States ( Taxodium disticlium), that the 

 latter is used as a stock for the former, with its allied 

 species and varieties. 



CORPUS (Dogwood). Seedlings of the common Ameri- 



