Rydberg: Notes on Rosaceae 361 



Fragaria grandiflora Ehrh., the "pine strawberry," is a'native 

 of South America. It is often hard to distinguish it from F. 

 Grayana, but the petals are larger, usually over I cm. long, the 

 sepals ovate or ovate-lanceolate, the achenes set in shallower pits, 

 and the leaflets thicker. It often resembles closely F. chiloensis 

 but lacks the characteristic tomentum of the lower surface of the 

 leaflets. In cultivation are found many crosses between this 

 species and F. chiloensis and F. virginiana. In the New York 

 Botanical Garden herbarium there are the following specimens 

 of F. grandiflora, which were collected far away from dwellings 

 and which were well established at the localities : 



New York: Roadside in woods between Twin Lakes and 

 Mountain Lodge, Adirondack Mountains, July 4, 1906, Rydberg 

 7842. 



British Columbia: Trail, May 19 and June 13, 1902, /. M. 

 Macoun 63776 and 63777. 



Kentucky: Vicinity of Mammoth Cave, May 1899, Dr. E. 

 Palmer. 



At the same station where the writer collected F. grandiflora, he 

 found also the white-fruited F. vesca, and the ordinary F. virginiana, 

 with a white-fruited form of the latter. The white-fruited F. vesca 

 is not uncommon in certain localities from northern New York 

 and Connecticut to West Virginia and eastern Ohio. It is most 

 common in the mountains of Pennsylvania. It is strange that 

 this form should be common and apparently native in a region 

 where the typical F. vesca is very rare and is found apparently 

 only as an escape from cultivation. It is questionable if it should 

 not be regarded as a native geographical species even if it originally 

 mutated from F. vesca. It is not a form of the native F. americana. 



The white-fruited form of F. virginiana collected in the Adiron- 

 dacks by the writer and mentioned above, is very interesting. 

 As the white-fruited F. vesca and the ordinary red-fruited F. 

 virginiana were common along the road and growing together, 

 these white-fruited specimens of F. virginiana might be hybrids 

 between the two. They were typical F. virginiana, however, 

 in every respect, even to the pitted fruit, except that the latter 

 was white. 



