ON CALIFORNIAN MOSSES. 



17 



* Hymenostomum microstomum ranges from Massachusetts to the base of the Rocky Mountains. It was collected by 

 Drummond, and also by Mr. E. Hall, in a recent tour of botanical exploration with Dr. Parry, 1862. 



t The very rare and beautiful Campylostelium saxicola Bryol. Eur. was discovered this year by Mr. E. C. Ingraham, of 

 New Bedford, Mass., on boulders of granite. 



t I could add three apparently new species of this genus, brought from the Rocky Mountains by Mr. E. Hall ; but all 

 these species are without fruit, and an exact determination of them is of course impossible. 



$ Desmatodon flavicans ranges westward from the Rocky Mountains. 



|| Pottia subsessilis ranges westward from Illinois. (E. Hall.) 



1[ Zygodon Sullivantii Mull. It has never been found in fruit, and is thus a species of doubtful affinity. 



** The species of this genus, and also of Macromitrium and Syrrhopodon are tropical. Each of them has still one repre- 

 sentative in Eastern North America. 

 VOL. XIII. 3 



