Pedigree Chart of
Boreas
, 1 W-Y, Barr and Sons, England, 1913
N. bicolor
Empress
N. pseudonarcissus
Madame de Graaff
N. albescens
Loveliness
seedling
Boreas
N. Hispanicus
Seedling
unknown
Maximus
King Alfred
N. bicolor
Emperor
N. pseudonarcissus