Magazine  (Mar 1912)  Page(s) 45-46.  
 
Rosa umbrella. A delightful botanical Rose.
Its origin cannot be established. According to its botnical characteristics it belongs to the class of Rosa moschata, of which she will be a subspecies or variety. Strictly speaking, we do not have here a wild rose, but the botanical form of one. She represents a simple, but appealing Beauty. ...
The grafted Rose starts blooming early July and continues for many weeks. It is not seldom that a single one of the pyramidal trusses has 50-70 blooms and each cane blooms in the first year. The plant resembles in height and spread a vigorous Polyantha, being not less floriferous than such. The bud which is covered by the calyx until over its tip, is cream-yellow; its form long and pointed. The blooms is larger than R. canina and when expanded, pure white, with 5 petals; veined above, thus looking crepp-like. The fragrance is fine spicy. Just now, on the last day of October, several autumn blooms are pleasing me on a relatively full long-caned truss.
I am hoping for a bit larger bush in the second year, although I am already assuming that the dimensions of new beloved will be restricted. The blue-green coloured, light green shimmering foliage is small and is of most beautiful effect in contrast ti the virginal white bloom. I believe I am correct in assuming that the botanical name "umbrella" pertains to the umbrella-like inflorescence.

Book  (1902)  Page(s) 159.  
 
Rosa moschata, ses varieetés et ses hybrides
6167. umbrella...(Hort.)...R. sauvage.