"HARDY" RHODODENDRONS 261 



enumeration of the best varieties which the experi- 

 ence of the Arnold Arboretum has found most adapt- 

 able to this climate. With red flowers Atrosanguin- 

 eum (very early), Charles Dickens, H. W. Sargent 

 (late); with reddish flowers Caractacus; with rose- 

 colored flowers Roseum elegans, Lady Armstrong; 

 with pink flowers Mrs. Charles Sargent, Henrietta 

 Sargent; with dark purple flowers Purpureum grandi- 

 florum, Purpureum elegans; with light purple flowers 

 Everestianum; with white or nearly white flowers, 

 Album elegans, Album grandiflorum, Catawbiense 

 album (very early). A few more are mentioned 

 later on in the text and one or two others, for exam- 

 ple, the white-flowered Madame Carvalho, are prom- 

 ising. 



It will be seen that the number is very small, and 

 also it must be pointed out that in the Arnold Ar- 

 boretum these plants occupy a very favorable posi- 

 tion at the base of a steep slope clothed with Hemlock 

 and therefore much protected. Had this chapter 

 been written two or three years ago one might have 

 included other varieties such as Mrs. H. H. Hunne- 

 well, King of the Purples, and Delicatissimum, but 

 longer experience has proved them less hardy than 

 was generally supposed. 



The mild winter of 1914-15 will long be remembered 



