18 FLORA OF THE MIAMI VALLEY. 



G. Virginianum, L. Virginian Geum. 



G. strictum, Ait. Yellow Avens. 



G. vernum, Torr. & Gray. Spring Geum. 



POTENTILLA, L. 

 P. Norvegica, L. Hairy Potentilla. 

 P. Canadensis, L. 



var. simplex, Torr. & Gray. Cinquefoil. 

 P. fruticosa, L. Shrubby Cinquefoil. 



FRAGARIA, Tourn. 

 F. Virginiana, Ehrh. 

 var. Illinoensis, Gray. Wild Strawberry. 



RUBUS, Tourn. 

 R. villosus. Ait. High Blackberry. 



ROSA, Tourn. 

 R. setigera, Michx. Climbing Rose. 

 R. Carolina, L. Swamp Rose. 

 R. lucida, Ehrh. Dwarf Wild Rose. 



CRATAEGUS, L. 

 C. coccinea, L. Scarlet-fruited Thorn. 

 C. tomentosa, L. Pear Thorn, 

 var. pyrifolia. Gray. Pear-leaved Thorn, 

 var. mollis, Gray. Downy-leaved Thorn. 



PYRUS, L. 

 P. coronaria, L. Wild Crab Apple. 



AMELANCHIER, Medic. 

 A. Canadensis, Torr. & Gray. Service Berry. 



