|Quercus palustris 'Sovereign' McArdle & Santamour, Journ. Arboric., 13(10): 255 (1987)|
Subgenus Quercus, section Lobatae (the red oaks)
US Patent granted to David B. Cole on 23rd August, 1966 without a designated name. Patent assigned to the Cole Nursery Company, Ohio, USA.
A photographic image of the patent documentation may be downloaded (for which you will need a TIFF reader on your computer).
United States Plant Patent PP 2662
|Main Horticultural References|