294 



Crataegus macrosperma. Variable Thorn. 



Location: Fruticetum. 



Natural distribution: Northeastern United States and Nova 

 Scotia. 

 Crateagus macrosperma var. matura. Sharp-lobed Variable 

 Thorx. 



Location: Fruticetum. 

 Crataegus macrosperma var. pastorum. Pasture Variable 

 Thorn. 



Location: Fruticetum. 



Natural distribution: Western New England and New 

 York. 



Crataegus macrosperma var. pentandra. Five-stamened Var- 

 iable Thorn. 



Location: Fruticetum. 



Natural distribution: Vermont to Virginia. 

 Crataegus Marshallii. Parsley Haw. 



Location: Fruticetum. 



Natural distribution: Southeastern United States. 

 Crataegus missouriensis. Missouri Thorn. 



Location: Fruticetum. 



Natural distribution: Missouri. 

 Crataegus mollis. Downy Thorn. 



Location: Arboretum. 



Natural distribution: Northeastern North America. 

 Crataegus monogyna. Haw. 



Location: Fruticetum. Arboretum. 



Natural distribution: Europe and temperate Asia. 

 Crataegus monogyna var. albo-plena. White Double-flow- 

 ered Haw. 



Location: Arboretum. 



Horticultural origin. 

 Crataegus monogyna var. rubro-plena. Red Double-flowered 

 Haw. 



Location : Arboretum. 



Horticultural origin. 



