1898] 133 



LIST OF SPECIES OF MAPLES GROWING AT THE 

 CENTRAL EXPERIMENTAL FARM, OTTAWA. 



By W. T. Macoun. 



The maple is an interesting tree to most people, and 

 the following notes are published in order that more may 

 know how many species and varieties can be grown in this dis- 

 trict, whence they come, whether they are hardy, half-hardy, or 

 tender ; and which of them are the most ornamental. 



Only 5 species and i variety of maple are growing wild in 

 the vicinity of Ottawa, namely, A. pennsylvanicuni, L. ; A. spica- 

 tuin, Lam. ; A. saccharimim, Wang. ; A. saccharinum nigrum ; 

 A. dasycarpiun, Ehrhart ; A. nibftun, L. In cultivation the 

 only foreign kinds noticed are the Norway Maple {Acer plata- 

 noides,!^.), Wier's Cut-leaved M^L^pXe^Acer dasycarpum laciniatum, 

 Wieri) and Schwedler's Maple {Acer platanoides ScJiwedleri). 

 In the Arboretum at the Central Experimental Farm there are 

 19 species and about 65 varieties which have lived through from 

 one to eight winters. Some of these are quite hardy. 



In the following list, of species only, the nomenclature is 

 according to the "Hand-list of Trees and Shrubs grown in 

 Arboretum, Royal Gardens, Kew," which, with few exceptions, 

 is the same as the "Index Kewensis." 



When a tree is not killed back one-sixth of its growth it is 

 called hardy ; when it is killed back one-half, half hardy ; when 

 to near the ground or to the ground, tender. 



A. canipestre, L. — Common Maple. Europe, West Asia. 

 Planted 1896. Half hardy until last winter when it proved 

 hardy. A small slow-growing tree. Fairly ornamental. 



A. circmattiin^Yursh. — Vine Maple. Western North America. 

 Planted 1894. Hardy. Some specimens of this maple have not 

 proved hardy. It is a very pretty native species with drooping 

 branches and vine-like foliage which becomes brightly coloured 

 in autumn. 



A. cisufolmm, C. Koch. — Japan. Planted 1894. Half hardy. 

 This has finely cut foliage, and if it continues to stand our 

 winters will probably prove very ornamental. 



