Rydberg: Notes on Rosaceae 465 



Ruhus occidentalis X strigosiis (R. neglectus Peck; Melano- 

 hatus neglectus and M. michiganus Greene). This is a rather com- 

 mon hybrid and it would be superfluous to cite specimens. 

 Sometimes it resembles more one parent, sometimes the other. 

 The original R. neglectus is most like R. occidentalis, while Melano- 

 hatus michiganus approaches R. strigosus. 



Rubus occidentalis X procumhens. The very interesting plant, 

 which I referred to this hybrid, was collected by Commons nearly 

 forty years ago. Commons recognized it as a hybrid of R. 

 occidentalis but made no suggestion of the other parent. This is 

 evidently a member of the Euhatus section, apparently to be sought 

 among the dewberries, and most likely R. procumbens. Mr. 

 Commons remarks: "I tried to perpetuate this by sowing the 

 seeds at various times, but not one came up." 

 Rubus leucodermis X melanolasiiis. 



British Columbia: near international boundary between 

 Kettle and Columbia River, /. M. Macoun 64002; Chilliwack 

 Valley, /. M. Macoun 34805; also 7035 and dggyo from British 

 Columbia. 



Montana: Belton, 1903, Umbach 6g8; McDonald's Lake, 

 1909, M. E. Jones. 



Oregon: Eastern Oregon, 1897, Cusick 17 2g. 

 Washington: iSgj, Horner 163. 



Rubus macropetalus X viburnif alius. No other specimen but 

 the original one, Mr. df Mrs. C. Van Brunt 121, from Glacier, 

 British Columbia, has been seen of this hybrid. 



Rubus idaeus X strigosus. This is not uncommon in cultivation, 

 but no record of it in a wild state has been made. 



Rubus argutus X cuneifolius. This was first recognized as a 

 hybrid by Mr. Bicknell. The same form had also been collected 

 by Britton & Hollick, who did not venture to name it. Their 

 specimens were determined as R. Andrewsianus by Mr. Blanchard, 

 but the dense grayish pubescence of the under leaves is not found 

 in that species. All the specimens seen are from the sandy coast 



strip. 



New Jersey: Atlantic Highlands, 1906, Hollick &■ Britton; 

 Toms River, 1900, Bicknell go. 



