ROSA SPINULI FOLIA 
Geneva to Bale and Aarau. It is found in about five of the Swiss 
Cantons. It is probably a collective species with many forms. It is, 
however, generally regarded as a natural hybrid, of which one parent 
is Rosa pendulina L. and the other Rosa tomentosa Sm. Rosa Jundzilli 
Besser and Rosa inodora Fries have been thought even more likely 
parents. Dr. Christ believed the second parent to be Rosa mollis Sm., 
but Crepin 1 points out that what Dr. Christ takes for Rosa mollis 
Sm. is in reality Rosa omissa of Deseglise. He also calls attention to 
the complete absence of Rosa mollis in any of the habitats of Rosa 
spinulifolia , and thinks it quite possible that some of the forms are due 
to Rosa involuta Sm. influence. 
Des^Hise 2 names and describes the following six varieties : 
Rosa grandiflora. Rosa ambigua. 
Rosa glabrescens. Rosa glabrata. 
Rosa villosula . Rosa luspidella . 
1 Bull. Soc. Bot. Belg. vol. xxx. pt. i, p. io (1891). 
2 Ibid. vol. xiv. pp. 328-345 (1875). 
