Hardiness of some Exotic Plants. 115 



43. R. argentcum of Sir J. D. Hooker. This, in 

 common with many of the Himalayan rhododendrons and 

 other plants, is more capable of withstanding the severe 

 winter frosts than those of spring, that too frequently 

 destroy their swelling buds and young foliage, which 

 generally escaped in consequence of the unusual mildness 

 of last spring; and this species, although generally supposed 

 to require greenhouse protection, suffered very little from 

 the low winter temperature, except the loss of its most 

 exposed large leaves by wind breaking when they were 

 hard frozen. 



44. R. arcjenteum of Major Madden. A fine bushy 

 plant over 6 feet in height was not in the least injured. 



45. R. harhatum. — This magnificent arborescent species 

 was unharmed. 



46. R. campamdatum. — Neither this species nor its 

 variety R. c. rohustum have been perceptibly injured. 



47. R. campylocarpum. — This pretty little yellowish 

 liowering species proved to be quite hardy. 



48. R. ciliatum was unharmed. 



49. R. cinnabarimim was unharmed. 



50. R. cinnamomcum. — Of the variety to which this 

 name was originally applied, a fine bush 7 feet high by 

 8 feet in width was not in the least hurt. 



51. R, Fortuni. — This remarkable and very distinct free- 

 growing Chinese species sustained no injury. 



52. R. fulcjens. — A plant which is now about twenty-five 

 years old, and only 15 inches in height by 33 in diameter, 

 has never suff"ered from either winter or spring frosts, nor 

 has it yet fiowered, but its compact growth, and the bright 

 verdigris-green of its young leaves, render it a favourite 

 dwarf evergreen. 



53. R. glaucum is a good associate for, and equally 

 proof against winter frosts, as the so-called " roses of the 

 Alps," R. ferrugineiim and R. hirsutum. 



54. R. Hodgsonii. — This compact growing, and handsome, 

 large leaved species, seems equally hardy with the old well 

 known R. cataiubiense and its varieties, and is therefore 

 likely to become of much importance in hybridizing. 



55. 7i. Keysii {R. Blandfordicejlorum). — A 4^ feet high 



