Book  (2020)  Page(s) 151.  
 
Erroneously named and unidentified rose varieties at the Europa-Rosarium.
Gallica... 'Néron' (Laffay, 1841?)

Book  (Apr 1999)  Page(s) 55-56.  
 
Néron ('Nero') Gallica. Laffay 1841. The author cites information from different sources... Violet crimson... crimson red marbled violet blue...

Book  (1997)  Page(s) 145.  
 
Laffay (France) 1841. Description and vital statistics. Rich red with a deeper centre, fully double and scented...

Book  (Apr 1993)  Page(s) 408.  
 
Néron Gallica, crimson, blotched and marbled violet, 1841, Laffay. Description.

Book  (1902)  Page(s) 102.  
 
Rosa gallica.
Race des Rosiers de Provins
3030. Néron...(Laffay 1841)...cramoisi marbré violet.

Book  (1895)  Page(s) 107.  
 
R. gallica provincialis Willd.....Néron, carmine, with violet

Book  (1889)  Page(s) 122.  
 
French Roses, striped and marbled...
45 Néron Medium size, double, carmine, marbled with violet-blue

Book  (1858)  Page(s) 217.  
 
Rosa gallica.
Nero, Blumen mittelgroß, voll, chocoladefarben, schieferfarbig marmorirt, mit roth punktirtem und chocoladefarbig geflecktem Centrum, schalenförmig, von kräftigem Wuchse.

Translation: Rosa gallica.
Nero, the medium-sized, full, imbricated blooms are chocolate-colored with slaty shadings; the center speckled with red and spotted with chocolate; a vigorous plant.

Book  (1850)  Page(s) 492.  
 
French Roses. Nero, violet purple, spotted slate.

Book  (1848)  Page(s) 59.  
 
The French Rose.
Rosa gallica.
339. Nero; flowers chocolate, marbled with slate, their centre red sprinkled with chocolate spots, of medium size, full; form, cupped, the lower petals often turning back the flowers before falling, becoming inversely cupped. Habit, branching; growth, vigorous. A singular and beautiful variety.