ON NEW MOSSES. 109 



OCTOBLEPHARUM, Hedw. 



0. ALBIDUM, Hedw. 



Unit. On logs, &c., in swamps, near Enterprise, Florida. D. B. Smith. 



FISSIDENS, Hedw. 

 F. INCURVUS, Br. and Sch. 



Ilab. Attached to rocks and stones in running streams about Philadelphia, Pennsylvania. 

 F. TAXIFOLIUS, Hedw. 



Unit, Along the banks of the Brandywine Creek, Delaware, in 1850, and not uncommon near the Schuylkill 

 River, Philadelphia. 



Of this genus the writer has detected other species about Philadelphia, which are new, 

 and, when proper specimens are procured, will be described. 



TRICHOSTOMUM, Br. and Sch. 



T. TORTILE. Var. PUSILLUM, Br. and Sch. 



Hub. Gravelly soil, roadsides, Philadelphia, Pennsylvania. 



This species has not the perichsetial leaves embracing at the base, the annulus is simple, 

 the membrane of the peristome is emerged, and the leaves are denticulate at the apex. 



BARBULA, Hedw. 



B. RIGIDA, Schultz. 



Hub. Near Athens, Illinois, E. Hall. 



B. TORTUOSA, Wfb. and Mohr. 



Hab. Goat Island, Falls of Niagara, and Alleghany Mountains, Pennsylvania. 



B. PAPILLOSA, Wils. 



Hub. On the trunks of buttonwood trees, New Jersey and Delaware, and elm trees, Massachusetts. 

 B. FALLAX, Hedw. Var. brevifolia, Mull. 

 Hab. Brattleboro, Vermont, C. 0. Frost. 



DIDYMODON, Br. and Sch. 

 D. RUBELLUS, Br. and Sch. 

 Hab. Trenton Falls, New York, 1850. 



D. CYLINDRICUS, Hook, and Tayl. 



Hab. Coventry, Chester County, Pennsylvania, December, 1850, and Alleghany Mountains, Pennsylvania, and 

 Catskill Mountains, New York. 



POTTIA, Ehrh. 

 P. SUBSESSILIS, Br. and Sch. 

 Hab. Bluffs, Sangamon River, Illinois, E. Hall, and Texas, Dr. Blgelow. 



