Book  (1936)  Page(s) 273.  
 
Forster (HP) Joubert 1864; vivid crimson and dark violet, large, double, imbricated, many prickles, short branches, blackish green foliage, growth 7/10, robust

Magazine  (29 Nov 1864)  Page(s) 426.  
 
M. Eugène Verdier announces the following, of whose parentage nothing is said; and the only information is that he has a part of the stock. I hardly think that one would be justified in looking for much from them. These are -
...Forster.- Imbricated; fine deep red shaded with violet.