Howe : Preliminary notes on the genus Usnea 



317 



Usnea b areata dasypoga Fr. 



This subspecies is the pendulous (long on^the Pacific coast), 



4 



filamentous form that reaches 35 or 40 cm. in length. It is the 

 occasional coarseness of the proximal portions of this lichen that 

 has led it to be determined as ceratina by many individuals, 

 U. barbata dasypoga is common in the high altitudes of the Cana- 



KAP OF THE 



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Figure A. Map showing distxibution of subspecies and forms of Usnm barbata in 



Ne\v*England. 



