Shafer : Vascular Fr.oRA of Allegheny County. 47 



ROSA Liniicxus. 



* R. setigera Michaux. Climbing rose. 



Harrison Township, McWillianis' Hollow, July, 1895. 

 O'Hara Township, roadside east of Aspinwall, June, 1900. 



? R. blanda Aiton. Smooth rose. 



* R. Carolina Linn?eus. Swamp rose. 



* R. humilis Marshall. Low pasture rose. 



'■'<" R. humilis lucida (Ehrhart). Pasture rose. 

 J^. liiciJa Ehrhart. 



j R. canina Linnaeus. Dog rose. 



* R. rubiginosa Linnaeus. Sweetbrier. 



POMACES Linnaeus. 

 APPLE FAMILY. IV-44. 



PYRUS Linnceus. 



=•- P. communis Linnaeus. Choke-pear. 



Occasionally in margin of woods, Moon Township, etc. 



MALUS Jussieu. 

 /^Fi^fAS" Linnaeus. 

 '■''■ M. coronaria (Linnaeus). .American crab-apple. 



'■^- M. angustifolia (.\iton). Narrow leaved crab-apple. 



South Fayette, near Herriottsville, May, 187 1, May 15, 1900, 

 Rev. S. W. Knipe. 



* M. Malus (Linnaeus). Apple. 



Frequently escaped to woods and thickets. 



