Newsletter  (Feb 2021)  Page(s) 18.  Includes photo(s).
 
Bourbons blended with Noisettes produce blossoms in large corymbs on luxuriant shoots, many of which grow out of proportion to the plant. ‘Desgaches’ would be an example. 

Book  (2006)  Page(s) 44.  
 
EUGÈNE DESGACHES [DESGACHES], Bourbon, Good, reliable rebloom. Outstanding fragrance. Desgaches, 1840 [Pickering]
Rose-red with a salmon glow, large flowers with recurving petals. Very floriferous and a handsome, colorful shrub. ...The rose we grow is identical with one portrayed in Choix des Plus Belles Roses au Debut du Vingtième Siècle, and despite its appelation there -Tea- it is definitely a Bourbon.

Book  (Jun 1992)  Page(s) 36.  
 
Desgaches China. Desgaches, 1840. [Author cites information from different sources.]

Book  (1936)  Page(s) 204.  
 
Desgaches (bourbon) Desgaches 1840; carmine

Book  (1906)  Page(s) 46.  
 
3.006. Desgaches, Ile Bourbon, Desgaches 1840 carmin

Book  (1899)  Page(s) 49.  
 
Desgaches, Bourbon, carmine

Book  (1858)  Page(s) 234.  
 
Bourbon-Rose.
Desgaches, Blumen mittelgroß, voll, hellrosa, schalenförmig.

Translation: The Bourbon Rose.
Desgaches, the medium-sized, cupped flowers are pale pink.

Book  (1854)  Page(s) 275-277.  
 
Translation:
Perhaps one or the other lover of ever-blooming roses will thank me if I share the list of those I can recommend from personal acquaintance, regardless of age or novelty. Such are,...4) Ile Bourbon roses: ...Desgaches...

Magazine  (May 1850)  Page(s) 230.  
 
VINGT ET UNIÈME EXPOSITION de FLEURS, FRUITS ET LEGUMES, ET OBJETS D'ART ET D'INDUSTRIE HORTICOLES, les 16, 19 , 18 et 19 mai 1850, à l'orangerie du Luxembourg....
M. MAREST, horticulteur, rue d'Enfer, 87, à Paris.
569 Desgaches.

Book  (1849)  Page(s) 9, supplement.  
 
Descriptive List of Roses.
Ever-blooming Roses, blooming throughout the season.
Bourbon Roses.
395 Désgaches...cupped bloom form. Bright rose, good for pillars.