466 Rydberg: Notes on Rosaceae 



Rtibiis cuneifolius X floridus. What I regard as this hybrid is 

 one much resembling the last hybrid but a weaker plant with more 

 curved prickles. Judging from the analogy, it is not improbable 

 that this plant is such a hybrid, as it differs from R. argutus X cunei- 

 folius in the same characters as does R. floridus from R. argutus, 

 and both R. floridus and R. cuneifolius are found in the district 

 where the supposed hybrid has been found. Mr. Ashe distributed 

 it mixed with R. cuneifolius. 



Virginia: Ocean View, Norfolk, 1898, Kearney 1212. 



North Carolina : Chapel Hill, Ashe, mixed with R. cuneifolius. 



Ruhiis cuneifolius X lucidus. Mr. Nash collected specimens 

 near Eustis, Florida, which resemble R. cuneifolius in many 

 respects, but the leaves are larger, more acute and more coarsely 

 serrate. He determined them doubtfully as R. cuneifolius. Simil- 

 ar specimens were also collected by Chapman, in Duval County, 

 Florida, together with R. cuneifolius. He also has collected R. 

 lucidus in the same county. 



Florida: Duval County, Chapman 2832, mostly; Eustis, 

 1894, Nash yo. 



Rubus cuneifolius X trivialis. Somewhat similar specimens 

 were collected by Coker at Hartville, South Carolina, but In these 

 the plant is prostrate, the flowers mostly solitary, and in habit it 

 resembles more R. trivialis. These specimens I regard as R. 

 cuneifoliusy, trivialis. 



Rubus canadensis X sativus. The specimens which I regard 

 as this hybrid were originally labeled R. canadensis, but Mr, 

 Blanchard has afterwards written on the sheets "A var. or form 

 of R. can. W. H. B." It is evidently not pure R. canadensis for 

 the inflorescence is glandular and the leaflets of the new shoots are 

 broadly cordate and abruptly acuminate as in R. sativus. 



Vermont: Windham, June 6, 1903, Blanchard 265. 



Rubus nigricans X sativus. I have no positive evidence that 

 R. frondisentis Blanchard is such a hybrid, but the plant combines 

 characters of the two species, and is found where the ranges of the 

 two species overlap. It is also a very local plant and has not been 

 collected except at the original station. 



Rubus argutus X nigrobaccus. This hybrid was first recog- 



