157 



Pyriis sambucifolia^ C. &. S. 



Doubtfully reported by Dr. Rydberg as occurring near 

 Sturgis in the Black Hills. 

 Aiuelancliier Canadensis, (L. ) Media. June Berry, Ser- 

 vice Berry. 



Along the Sioux river near Sioux Falls. 



Amelaneliier rotnndifolia, (Michx.) Roem. Round- 

 leaved June Berry. 

 Amelanchier Canadensis rotundifolia^ T. & G. 



In woods and thickets in the Minnesota and Sioux 

 valleys. 

 Amelanchier alnifolia, Nutt. Northwestern June Berry. 

 Amelanchier Canadensis alnifolia^ T. & G. 



In thickets and on dry knolls from the James valley 

 westward; common. 

 Crataegus macracantlia, Lodd. Long Spined Thorn- 

 apple. 

 CratcEgus coccinea macracantka^ Dudley. 



Common in thickets in the Minnesota, Sioux^ and 

 James valleys, and in the Black Hills. 

 Cratseg-ns mollis, (T. & G.) Scheele. Red-fruited Thorn. 

 Cratcsgus tomentora mollis^ Gray. 



Occasional in thickets in the Minnesota, Sioux and 

 James valleys. 



Drupace^. — Plum Family. 



Prnnns Americana, Marsh. Wild Plum. 



Very abundant in thickets in the vicinity of lakes and 

 streams throughout the state. 

 Prvmns Besseyi, Bailey. Western Sand Cherry. 



On bluffs and banks of streams from the James valley 

 westward. 

 Prnnus Fennsylvanica, L. F. Pin Cherry or Wild Red 

 Cherry. 



This species has only been reported from the Black 

 Hills. 



