Book  (1936)  Page(s) 492.  
 
Morgenster (hybrid lutea) Nyveldt 1916; sport of Mme. Ed. Herriot; coppery orange, large, semi-double. Sangerhausen

Website/Catalog  (1923)  Page(s) 44.  
 
Pernetianas ...  Morgenster (Nyveldt, 1920). Coppery saffron. Fragrant. Sport of Herriot. Certificate first class "N. M. v. T. & Pl.".