All these banksia hybrids were bred by Andrea Mansuino. Are long stem larger miniature aimed at greenhouse florist rose production. Andrea Mansuino told me they met success in Japan.
However, in the Catalogue, of the Firm Arturo Ansaloni who introduced the Rosa mansuiniana in Italy, it is clearly stated "Questo è il risultato di un lungo e meticoloso lavoro da parte del noto ibridatore Comm. Quinto Mansuino di Sanremo .." (This is the result of a long and meticulous work by the well known hybridizer Comm. Quinto Mansuino in Sanremo)
Sorry, I overlook this indication: Ansaloni piante e fiori, Catalogo giardinaggio, 1967-68
I was thinking of a later bred group of vars McCann speak of.
Mansuino, Dr. Andrea Rose breeder Italy The nephew of Quinto Mansuino. [From Miniature Roses: Their Care and Cultivation, 1991, by Sean McCann, p. 17:] Andrea Mansuino believed there was a need for a new type of florist rose, and he set out with his own ideas to breed this important plant... resulting in 'Generosa'... ...and a bunch of others not on HMF
The breeder assignment is based on the info in the Fineschi catalogue and "Modern Roses". The US patent may have more information, but I do not have the viewer required for the images.
Generosa was bred in 1964 when Andrea Mansuino was 4 years old. I am afraid that there are around informations that mix up the activities of two members of the Mansuino family who did (Quinto) and are (Andrea) still doing so much for rose hybridization.