326 MINNESOTA BOTANICAL STUDIES 



ranges, checked by examination of the collections made during that 

 time, and the Selkirk collections of the late C. H. Shaw. A study 

 of the ranges given in Brown and Schafifer's "Alpine Flora of the 

 Canadian Rocky Mountains" bears out these observations. Several 

 technical groups like grasses and willows are not treated in that 

 work, but of the species there listed which appear above as occurring 

 on the south moraine and not on the north, the range of over one- 

 third is given "throughout the Rockies." This indicates that they 

 are sufficiently rare in the Selkirk range so that there were no speci- 

 mens at hand when that work was being prepared. 



The following table gives a list of those plants which are abun- 

 dant on the south moraine and either entirely absent from the north 

 moraine or very scarce there, together, in each case, with the other 

 known Selkirk stations of the species (except in a few cases where 

 these are very numerous), and notes as to their occurrence in the 

 Rockv mountains. 



TABLE III. PLANTS ABUNDANT ON THE SOUTH (CALCAREOUS) MO- 

 RAINE, AND VERY SCARCE, OR NOT OCCURRING ON 

 THE NORTH (gRANITIC) MORAINE 



Anemone Drummondii S. Wats. "Small peak, 118° 20' W. Long., 51° 45' N. 

 Lat.i ;" Beaver valley ; Copperstain mt., Prairie Hills ; Rockies, common. 



Anemone multifida Poir. Cougar valley ; Rockies, very abundant. 



Arctostaphylus uva-ursi (L.) Spreng. Azemuth mt. ; Howser lake; Rockies, 

 common. 



Aster Richardsonii Spreng. Bishop's range; Cougar valley; Rockies, com- 

 mon. 



Carex nardina Fries. "Small peak ;" Rockies, present, but apparently not very- 

 abundant. 



Castilleja pallida (L.) H.B.K. Battle creek; mountain slopes near Mt. Sir 

 Sandford (talcose schist); Copperstain mt., Prairie Hills; "throughout 

 the Rockies," Brown and Schaffer. 



Crepis nana Richards. Fish creek valley ; Dawson moraine ; Glacier Circle ; 

 Rockies, abundant. 



Draba lonchocarpa Rydb. Two other collections in the region about Mt. Sir 

 Sandford; Rockies, (?). 



Draba nivalis Liljb. Cougar valley; Glacier Circle; Rockies, present accord- 

 ing to Brown and Schaffer, no specimens collected or seen. 



1 This is the location given on a number of specimens collected and distributed by tlie 

 late Charles H. Shaw; it is ))robably just south of Mt. Sir Sandford, though the stated 

 longitude is too high. It appears to have a thoroughly calciphilous flora. Soil particles 

 from the roots of some of these specimens have been tested, and show a large proportion 

 of calcium. This location will hereafter be cited as "small peak." 



