Rydberg: Notes on Rosaceae 125 



Saxatiles 



Rubus saxatilis L. No authentic specimens of this have been 

 collected on the North American continent, but on this side of the 

 Atlantic Ocean it is found only in southern Greenland. A sterile 

 branch that may belong here was collected by Bicknell at Pied- 

 mont, Quebec. 



Rubtis puhescens Raf. seems to be the oldest specific name 

 for the species usually known as R. triflonis Richardson or 

 R. americanus (Pers.) Britton. Rafinesque based his species on 

 Rubus saxatilis canadensis Michx. Evidently he did not know the 

 plant, for eight years later he proposed a new genus based on what 

 he supposed to be a new discovery of his. In the same year, 1819, 

 the species was published both as Cylactis lyncemontana and C. 

 montana. Seringe also thought there were two distinct species. 

 His R. mucronatus is the same as R. pubescens Raf. and R. aego- 

 podioides was based on Cylactis montana Raf. Torrey adopted 

 Michaux's varietal name as specific and Britton did the same with 

 that of Persoon, but both Rubus canadensis and R. americanus 

 had been used previously. 



Rubies transmontanus Focke. Focke proposed this name, as 



he thought, instead of the untenable R. hesperius Piper, but his 



description does not fit the latter at all. R. hesperius is a black 



raspberry, closely related to R. occidentalis, but the leaves are 



without tomentum beneath. The stem is armed with curved 



prickles as in that species. The plant described by Focke is, 



from the description, closely related to R. pubescens, but the stem 



is more or less prickly or bristly. The specimen cited below is 



the only one seen which fits the description. This may be a 



hybrid between R. pubescens and some species of the R. strigosus 



relatives. Focke gives as distribution, eastern Washington and 



the banks of the Columbia River at Revelstoke, British Columbia. 



The first part of the range may have been taken from the actual 



p.. hesperius Piper, and the specimens which Focke described 



were probably from Revelstoke. 



British Columbia: near mouth of Dowrie Creek, 1905, 



Shaw 1117. 



Glabrati 



This group comprises the subgenera Chamaebatus and Orobatus 



of Focke, which I can not separate, the former comprising the more 



