Book  (Apr 1993)  Page(s) 279.  
 
Jules Closen Rambler, dr, 1935, 'Excelsa' sport; Opdebeeck. Flowers darker and more double.

Website/Catalog  (1947)  Page(s) 48.  
 
Wichuraiana Class. Jules Closon (Op. de Beeck Fils, 1935). 6. A dark red sport of 'Excelsa' but flowers are more double.