130 Muhlenbergia, Volume 7 



A^narella scopiilorwn Greene, occurred sparingly at 7100 

 feet in rich damp soil near the stream. This is apparently the 

 Gentiana Aniarella of Watson, collected somewhere on the 

 southern part of the range. 



The following species not listed by Watson were collected 

 in the canyon: 



Bromus Richardsonii Glycosma occidentalis 



Koeleria macrura Elephantella groenlandica 



Corallorhiza multiflora 



On August 8th I climbed the ridge paralleling the canyon 

 on the north side, ascending to loooo feet. The lower part of 

 this ridge, like many of the others, is rather broad, but the sides 

 soon become quite steep, and toward the summit the south side 

 is very precipitous. 



From about 7000 to 8500 feet Cei^cocarpus ledifolhis is com- 

 mon, usually a good sized tree, the trunk nearly a foot in diam- 

 eter. From this point south to the end of the range it is one of 

 the features of the drier slopes. 



Up to 8900 feet the formation is slate, shale, or some form 

 of volcanic rock, and at 8700 feet where the small fragments of 

 stone were closely packed and not much disintegrated, allowing 

 but little vegetation, E7nogoniiin Kifigii^ Phoenicaulis Menziesii^ 

 and a Selaginella were found. Just above 8900 feet granite was 

 entered and continued up to at least 9200 feet, the highest ele- 

 vation in that formation from which I have collections. 



My way led along the north slope, always below the crest 

 after an altitude of 8700 feet was reached, nor did I again touch 

 it until 9750 feet was attained, following it from that point up 

 to 1 0000 feet. Here, at about 9700 feet one of the best groves 

 of Piniis fiexilis was encountered, the trees growing larger than 

 at any other place, so far as observed. 



Physaria acutifolia Rydb., was collected at 8900 feet in 

 granitic detritus, where there was but little vegetation. This is 

 probably the P. didymocarpa of Watson. 



A plant referred to Carticra argiiia Greene, was fonnd 

 sparingly at 9000 feet on cliffs. It is no doubt \.\\ii StreplaiitJiiis 

 cordatus of Watson's list. 



