Contents v 



CHAPTER X 



PAGES 



THE MINER GROUP 58-59 



Pomological importance Botanical position Prunus 

 Iwrtulana mineri Probable mongrel origin Charac- 

 ters Hardiness. 



CHAPTER XI 



THE WAYLAND GROUP 60-66 



History of the treatment of this group Its name 

 Prunus rivularis Origin of the varieties geographi- 

 cally considered Genealogy of the group Identity 

 of the group with Prunus rivularis Pomological 

 characters Distinctness Adaptations. 



CHAPTER XII 



THE WILDGOOSE GROUP . . . ... . 67-69 



History of Prunus hortulana Characterization Bo- 

 tanical position The present view of Prunus hor- 

 tulana Popularity of the varieties Blossoming. 



CHAPTER XIII 



THE CHICASAWS 70-73 



Geographical range Possible nativity Wild char- 

 acters Blooming The fruit Uses The species in 

 cultivation. 



CHAPTER XIV 



THE SAND PLUM . . . . . . . . 74-78 



Personal paragraph Description The fruit Nat- 

 ural range The Sand plum in a Kansas garden 

 Named varieties Behavior in cultivation. 



CHAPTER XV 



THE HYBRID PLUMS 79-85 



The beginnings The first monograph Possibilities 

 Origin of the Hortulanas Hybridization in nature 

 Hybridization in the orchard Hybrids in groups 

 Tests of hybridity Pedigree vs. external charac- 

 ters Intermediateness of character Caution Diffi- 

 culties foreseen The classification of hybrids Lim- 

 its and affinities in crossing The utility of various 

 species in hybridizing. 



