The idea that they were two different roses is related to the colours that, to me, "looked" rather different but colour is not my "field". If I exclude the "colour problem" I agree that Ingegnoli might have commercialized Borgatti's roses. This hypothesis is supported also by the fact that in the 1943 Ingegnoli catalogue is listed also Libia, a Borgatti rose. On the other hand Borgatti in 1933 had a his own catalogue where, however, no roses of his was listed ... The hypothesis of a collaboartion of Borgatti with Ingegnoli would explain also another intersting datum. In my long conversation with Lodi's relatives they told me that he was awarded a price by the Munucipality of Bologna for having bred the darkest rose ever bred. This rose was not repeting and for this reason Bonfiglioli & son did not commercialized it. At that time thus Borgatti was taking care of Lodi's roses (he sent them to Sangerhausen). Interestingly in Ingegnoli's catalogue is listed a Fiamma nera that is stated as the darkest rose ever bred ... Is it the Lodi's rose handed to Ingegnoli by Borgatti?
To conclude: if you think that the colours of the two Rosalba are equivalent .. other data fit for their being the same rose!!
Thank you for pointing it.