110 NEW YORK STATE MUSEUM 



Crataegus crus-galli L. 

 Cocksjmr thorn 

 Woods and thickets. Frequent. May. 



Crataegus punctata Jacq. 

 Large-fruited thorn 

 Thickets and fields. Common. Mav. 



Crataegus oxyacantha L. 

 Hawthorn 

 Yards and their borders. Frequent. May. 



Crataegus coccinea L. 

 Scarlet thorn 

 Woods, thickets and pastures. Common. May. 



Crataegus macracantha Lodd. 

 C. coccinea v ar. macracantha Dudley 



Lo7ig-spined thorn 

 Woods at Apalachin. Occasional. May. 



Crataegus tomentosa T.. 

 Pear thorn 

 Roadsides near Barton. Rare. It flowers later than our other 

 species of thorns. June. 



Prunus americana Marsh. 



Wild red plum 



Along streams and in moist woods, often forming thickets. 



Frequent. May. 



Prunus cerasus L. 



Sour cherry 



Escaped from cultivation to roadsides and thickets. May. 



Prunus avium L. 

 Siveet cherry 

 Escaped from cultivation to roadsides. May. 



Prunus pennsylvanica L.f. 

 Wild red cherry. Pin cherry 

 In thickets and along fences. Common. May-June. 



