116 PROCEEDINGS OF THE ACADEMY OF [Jan., 



lobed; in this he doubtless merely follows Watson. He suggests, 

 however, that pisocarpa and fendleri may be varieties of woodsii. 

 Cr^pin, in 1896, dismissed woodsii as a doubtful species. Lindley, in 

 his first description, said the prickles were scattered, becoming paired 

 (under the stipules) toward the extremities. In Bot. Reg., XII, PI. 976, 

 lie figured them as quite regularly paired, both on the branches and 

 floriferous branchlets; the leaflets are represented as oboval and attenu- 

 ate at base, with simple teeth. It will be apparent from all this that 

 B. woodsii is not well understood, but it seems to be a low northern 

 form allied to the R. neomexicana of New Mexico, and not to any of 

 the Pecos roses. 



There is in the Kew herbarium a rose labelled R. arkansana, from 

 ]\Iedicine Hat, June 1, 1894, John Macoun, 4,567. It has the leaflets in 

 sevens, pale, more or less cordate or truncate, varying to more rounded, 

 sharply serrate ; flowers rather small, corymbose ; sepals reflexed after 

 flowering, without lateral lobes. This is certainly not R. macounii, nor 

 can it very well be the real cvkansana; may it be the genuine ivoodsii ? 



(14) R. maximiliani Nees. 



A species of western Nebraska, differing from ivoodsii by its larger 

 yellow fruit and more pubescent leaves. 



(15) R. blanda Aiton. , 



A smooth, slightly prickly rose of Hudson's Bay and Newfoundland. 

 Various Rocky Mountain plants have been confused wdth it. 



(16) R. acicularis Lindley. 



An Arctic species of the Old World (Siberia and northern Europe), 

 said by Watson to occur in northern Alaska. It has oblong fruit; 

 leaves with five leaflets, with simple teeth and not glandular beneath. 

 The Rock}' Mountain representative is R. engelmanni. 



(17) R. californica C. and S. 



This Californian rose is represented in the Rocky ^Mountains b}^ var. 

 vltramontana Watson, which Crepin thought rather a variety of R. 

 pisocarpa. Dr. Rydberg, after seeing my description of R. pccoscnsis, 

 suggested that it might be ''R. californica idtramoniana, a good species 

 not closely related to R. californica, and growing in Utah, Wyoming 

 and Colorado." However, when this suggestion was made the fruit 

 of R. pecosensis had not been discovered. 



(18) R. pisocarpa Gray. 



A species of Oregon, with oval leaflets, stipules and bracts entire, 

 small flowers and small globose fruits. Extends northward to Pritisli 

 Columbia. 



