Roland M. Jefferson

• History, progeny, and locations of crabapples of documented authentic origin
• History, progeny, and locations of crabapples of documented authentic origin
• The Japanese flowering cherry trees of Washington, D.C
• The Japanese flowering cherry trees of Washington, D.C.
• The nomenclature of cultivated Japanese flowing cherries (Prunus)
• The nomenclature of cultivated Japanese flowering cherries (Prunus)
• The nomenclature pf cultivated Japanese flowering cherries (Prunus)