Wiener illustrirte Garten-Zeitung. Wien W. Frick. jahr. 18 1893: Page 458-60 http://www.biodiversitylibrary.org/item/52851 (translated using Google translate) B. Schmidtii ‘Rosea’ and B versaillensis, these hybrids were added last year a novelty drawn up by Herr Hofgartner Pfister at Gaibach, which was formed by a cross of the B. semperflorens with B. Froebelii, and their rich and intermittently continuous flowers, the individual flowers of this plant, have a diameter of 3½ cm, stand together in loose umbels of 6-10, they are white under the glass, and take a clear rose tone in the open. It is said to be a wonderful effect, since every plant produces such a quantity of bloom that scarcely the small plants, which are similar to those of B. Schmidtii, remain justifiable.
