472 Rydberg: Notes on Rosaceae 



Nova Scotia: Pictou, 1906, C. B. Rohinson 528. 

 Ruhiis canadensis X pergratus. Also first recorded by myself 

 at Tannersville, New York, '/960, 7961. 



Ruhus Baileyaniis X canadensis. The specimens originally 

 recorded as this hybrid were collected near an artificial lake or 

 reservoir above Sparta, New Jersey. R. canadensis was growing 

 in the neighborhood but R. Baileyanus was not collected there. 

 The habit of the plant and the poor fruiting indicate a hybrid of 

 R. canadensis and, probably, R. Baileyanus. To this belong: 



New Jersey: Morris Lake, Sparta, 1906, Rydberg 7992; 

 Montague Township, Sussex County, 1909, Nash; Midvale, 

 1908, Rydberg 8016. 



Nova Scotia: Macoun 81433, 81 431. 



Rubiis elegantulus X nigrobaccus. Rubiis flavinanus Blanchard 

 evidently represents this hybrid. The plant is decidedly inter- 

 mediate between the two. None except Blanchard's specimens 

 have been seen. 



Rubles Baileyanus X nigrobaccus. This was first recognized 

 as a hybrid by Mr. Bicknell, who, however, did not publish the 

 same. The following specimens belong here: 



New York: Smithtown, Long Island, 1910, Bicknell 17, 24. 

 Pennsylvania: Presque Isle, Erie, Otto Kuntze 2671. 

 New Jersey: Midvale, 1908, Rydberg 8017. 

 Rubus Baileyanus X procumbens. This has been known for 

 fifteen years or more and is even in cultivation, but it was first re- 

 garded as a variety of R. procumbens, and later as a distinct 

 species under the name R. roribaccus. Mr. Bicknell was the first 

 one to recognize it as a hybrid. Some of his specimens match 

 very closely the original ones distributed by Professor Bailey. 

 Massachusetts: Nantucket Island, 1910, Bicknell 8. 

 New York; Cedarhurst, Long Island, 1910, Bicknell 6; 

 Aqueduct, 1905, Bicknell 7. 



New Jersey: Ledgewood, 1909, Mackenzie 4127; Succasunna, 



Mackenzie 4126. 



Virginia: Glade Springs, 1908, Rydberg 8148; Fairfax, 1906, 



Blanchard loi, set 3. 



Pennsylvania: Willow Grove Park, 1906, Blanchard loi, 

 set 2; Lancaster, Blanchard loi, set i. " 



