Practically no mosses here listed are from the western slope of the Rockies. 

 A few from Corona and possibly some from Arapahoe and James peaks were a 

 few rods over the crest. 



I found the mosses more Eastern than Pacific, as the list shows. There 

 were practically no mosses on the trunks of the trees. Polytricha were not 

 numerous either in species or individuals, with the exception of Polytrichum 

 piliferum, which was abundant up to 13,000 ft. To understand this and some 

 other facts it will help to remember that this region is at about the latitude of 

 Baltimore. 



There were no mosses on the stones in the beds of the mountain creeks, 

 with few exceptions. At first I thought this was due to the temperature, but 

 at Corona Lake at an altitude of at least 11,000 ft. and with melting snow dis- 

 charging directly into the lake, I found the stones as well covered as in New 

 England. In one place at Tolland I found a sluggish cross creek well stocked 

 with mosses, including Fontinalis antipyretica, the only species of the genus and 

 the only locality discovered. I believe that the swiftness of the streams, filled 

 all summer, with no low water in warm weather, accounts for the lack of 

 mosses in the beds of the streams. Not a single species of Fissidens was found. 

 Hypnum revolutum is the dominant species in the forests, replacing our eastern 

 forms, such as crista-castrensis, imponens, etc. This moss is polymorphous and 

 apparently abundant all through the high mountains of Colorado, as it has been 

 sent me in a great variety of forms from other localities, particularly Pike's 

 Peak. Drepanocladus species are very abundant in the swamps. 



I was particularly pleased to find Brachythecium Nelsoni Grout abundant 

 and well marked and almost supplanting B. rivulare. Sphagnum is found in 

 the region but *it is very scarce. I collected none because I saw none. 



POLYTRICHACEAE 



Catharinea Selwyni (Aust.) E. G. B. Moist north-facing slope one mile 

 below Tolland. Alt. about 8,800 ft. Sterile. 



Pogonatum alpinum brevifolium Brid. Summit of James Peak, 13,000 ft. 

 Collected by Miss Leonard. The short oblique unsymmetric capsule does not 

 at all suggest this species, neither does the habit or appearance of the plant. 

 But for Prof. Frye's excellent monograph on our Western Polytrichaceae I should 

 never have been able to place these specimens. 



Polytrichum gracile Dicks. Not infrequent and fruiting freely. 



P. juniperinum Willd. Soil near Tolland. Miss Leonard. A stunted 

 form from the side of Arapahoe Peak may be var. alpinum. 



P. piliferum Schreb. Common and extending up to 13,000 ft. on James 

 Peak. 



DiCRANACEAE 



Ceratodon purpureus (L.) Brid. Common on bare and barren soil and 

 around rocks. 



Dicranodontium longirostre (W. & M.) B. & S. Near trestle above Tolland. 



