Species introduced to Portugal where it has become naturalised. Originally from Japan the single flowered form was introduced to France around 1860 (Quest Ritson Climbing Roses p. 93) and probably arrived in Portugal as a rootstock for other roses. A rose known as "rosa multiflora" was widely grown in the Azores by 1841 (A Winter in the Azores and a Summer at the Baths of the Furnas Joseph Bullar, 1841 p. 7).
At Monserrate it is found climbing trees and growing as a free standing bush. Photographed here in the former Rose Garden.
Rosa multiflora Thunb.
Flora Japonica, . . . 214. 1784.