Book  (Dec 2000)  Page(s) 85.  
 
Pierre Dupont
Hybrid Perpetual
Clément 1860

Book  (1936)  Page(s) 225.  
 
Dupont, Pierre (HP) ? 1861; glossy dark red, medium size

Book  (1906)  Page(s) 135.  
 
8.733. Pierre Dupont, Hybride Remontant, 1861 rouge foncé