Website/Catalog  (1903)  Page(s) 8.  
 
Hybrid Remontants. Varieties Best Suited for Forcing
Baron Bonstetten. Dark maroon red; large full flower.

Book  (1902)  Page(s) 119.  
 
Hybrides Remontants. Groupe E. — Général Jacqueminot
Les rosiers formant ce groupe, le plus important de tous, sont des arbustes de végétation vigoureuse, très florifères et portant beaucoup à fruit.
Rameaux allongés, généralement gris; aiguillons nombreux, crochus; feuillage vert foncé, folioles ovales; floraison le plus souvent en corymbe; fleur forme en coupe ou chiffonnée, frisée, quelquefois globuleuse, coloris du rouge clair au pourpre noirâtre; fruits abondants, de forme plutôt arrondie.
3738. Baron de Bonstetten... (Liabaud 1871)... groseille noirâtre.

Website/Catalog  (1902)  Page(s) 42.  
 
Hybrid Perpetuals, or Remontants.
Baron de Bonstetten — Rich, velvety maroon; large, full; a splendid sort.

Article (magazine)  (1 Feb 1898)  Page(s) 22.  
 
[From a talk by Léon Chénault at the Conference of Rosarians at Orléans, published in "Journal des Roses"]
Baron de Bonstetten (Liabaud, 1872), est identique à Monsieur Boncenne du même obtenteur en 1865.

Translation:
Baron de Bonstetten (Liabaud, 1872), is identical to Monsieur Boncenne of the same breeder in 1865.
 

Magazine  (1896)  Page(s) 80.  
 
Similar roses. These are not exactly synonyms, but are equal in the most points...
Mr. Boncenne, Perpetual, Liabaud, 64, Baron de Bonstetten, Liabaud, 72

Website/Catalog  (1895)  Page(s) 2.  
 
Baron de Bonstettin[sic] ($1.25 per dozen, $8.00 per 100), hybrid perpetual.   Velvety maroon, shaded with deep crimson; flowers large and full; an extremely handsome and valuable sort.

Book  (1895)  Page(s) 731.  
 
SYNONYMS OF GARDEN ROSES-The following Roses bracketed together have been regarded as synonymous according to the rule adopted by the National Rose Society:
(Monsieur Boncenne
(Baron de Bonstettin

Website/Catalog  (1894)  Page(s) 173.  
 
Hybrid Perpetual Roses. 
Baron de Bonstettin  Red, black, and crimson, in the way of Monsieur Boncenne, but larger, fuller, and of more vigorous growth.

Book  (1891)  Page(s) 500.  
 
In the Report of the State Board of Horticulture on Floriculture - Rose Culture: Perhaps there is no country in the wide world where the rose can be grown to greater perfection than in California...
What Sorts To Plant:....
Hybrid Perpetuals, or Remontants - Baronne de Bonstetten, very deep velvety crimson

Magazine  (1889)  Page(s) 283.  
 
The following Roses bracketed together have been regarded as synonymous, according to the rule adopted by the National Rose Society; and the name standing first in each case, being believed to be the original name, is considered for the purpose of the preceding Digest as the ruling name of the Rose.
(Monsieur Boncenne
(Baron de Bonstettin