Book  (1936)  Page(s) 601.  
 
de Reggio (hybrid China) ' ; blackish dark violet, medium size, double, semi-globular. de Vergnies.

Book  (1936)  Page(s) 729.  
 
de Vergnies (hybrid China) de Vergnies 1824; blackish violet = Duch. de Reggio.

Book  (1899)  Page(s) 50.  
 
De Vergnies, hybride de Bengale, de Vergnies, 1824, violet noir, syn. Dchesse de Reggio

Book  (1899)  Page(s) 55.  
 
Dchesse de Reggio, hybride de Bangale, violet foncé, syn. de Vergnies

Book  (1880)  Page(s) 42.  
 
hybrid china, Duchesse de Reggio (Devergnies), blackish violet, medium size, full, semi-globular.

Book  (1858)  Page(s) 291.  
 
Rosa hibrida bengalensis.
Duchesse de Reggio (Devergnies), Blumen voll, halbkugelig, schwärzlich violet. 

Translation: Hybrid China.
Duchesse de Reggio (Devergnies), the flowers are full, almost globular, a blackish-violet color.

Book  (1848)  Page(s) Div. II, p. 74.  
 
The Hybrid Chinese Rose...Belle de Vernier; flowers rosy crimson, marbled with dark purplish slate, more slaty towards their circumference, of medium size, full; form, cupped. Habit, erect; growth, moderate

Book  (1838)  Page(s) 337.  
 
Hybrid Bengal Roses. Duchess of Reggio. Devergnies. Tube of calyx, oval, glandulous, tightened at the throat. Flowers, middle-sized, full, hemispherical; of a blackish violet, the petals undulated at the edges.

Book  (1837)  Page(s) Section III, p. 57.  
 
Once-blooming roses. Hybrida. Devergnies alias Duchesse de Reggio, magnificent, fragrant. Purple-violet, shaded with ash-gray, center pale carmine-red with rolled petals; 2 in., double, plate-form.

Book  (1837)  Page(s) Sect. III, p. 54.  
 
Hybrid Chinas...Belle des Vergniers, beautiful, fragrant. Purple-red, 2 inches wide, double, plate-form.