I see that we don't have any parentage listed for this rose. Is this just an oversight, or do we have reason to doubt the R. pendulina x R. chinensis formula?

History of the Rose pp. 165-166 (1954)
Roy Shepherd
A rose deserving of special attention in the Pendulina classification is Rosa Lheritieranea Thory, the Boursault Roses, itself the forebear of a distinctive group within a group. The result of probably the first union of R. chinensis with a European rose, it was known for several years as R. Boursaultii, or popularly as the Boursault Rose. The exact date of origin is somewhat in doubt, but evidence points to the account that about 1810, Cugnot, a French nurseryman, produced a rose whose characters denoted that it was a hybrid of R. pendulina and R. chinensis. The original plant was sent to the garden of Henri Boursault. Here it was observed by Thory, who published the name R. Lheritierana, in Redouté’s Roses, but later in the same work referred to it as R. reclinata.