18 Proceedings of the Biological Society of Washington. 



Amygdalus petzoldii (Koch) Ricker. 



Prunus triloba petzoldii Bailey, Cycl. Am. Hort. 3:1457. 1901. 



Prunus petzoldii Koch, Dendr. 1:92. 1869. 

 Amygdalus triloba (Lindl. ) Ricker. 



Amygdalus pedunculata Bunge, Enum. PI. China 22. 1831, not 

 Pallas 1798. 



Prunus triloba Lindl. Gard. Chron. 268. 1857. 

 Amygdalus sweginzoivii (Koehne) Ricker. 



Prunus sweginzoivii Koehne, Mitt. Dent. Dendr. Gesell. 19:97. 1910. 



