To accomplish this purpose, a collection of species and hybrid roses from 

 various parts of the world was made at the Horticulture Farm of the N. H. 

 Agr. Exp. Station starting in 1950. It was known that ramblers or long, 

 flexible caned roses differ genetically from bush or short, stiff caned roses 

 by only one, or very few genes. It was also known that garden and wild 

 roses are complex hybrids, often isolated from breeding with one another 

 by various types of incompatibility. Thus the number and viability of seeds 

 to be expected from the cross breeding of any two roses and the probable 

 nature of their offspring are unpredictable. 



The following account describes three named cultivars resulting from 

 this project and gives an idea of the general nature and breeding behavior 

 recorded for the many rose species and varieties involved. 



White Mountains 



Distributed for testing as N. H. #5217, this vigorous rambler resulted 

 from the self-pollination of Skinners Rambler in 1952. Its small white 

 flowers are borne in large clusters along the previous years' canes in late 

 June. The individual flowers have 45 petals and resemble the "sweetheart" 

 type rose in the bud. These flowers have remained on the plant in good 

 condition for as long as 37 days, turning greenish white with age. The canes 

 are slender, thorny and vigorous but not rampant. Additional plants are 

 easily propagated from Summer cuttings and all plants have been completely 

 winter hardy at Durham, N. H. The leaves are of the R. multiflora type, 

 bright green and disease free for the most part. "Wbite Mountains" has 

 crossed readily with other roses. This rambler produces large numbers of 

 small fruits, green in color, that mature viable seeds early in the fall. 



White Mountains hardy climbing rose. 

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