Howe: Preliminary notes on the genus Usnea 



323 



Figure D. Map showing distribution of Usnea long^ssima in New England. 



in my set of Lichenes Boreali-Americani, second edition, collected 



at 



Wo 



Cummings, 



dasyp 



'ga Fr. The specimen dis- 

 tributed in my set is distinctly /^///Az/^, not scurfy in any portion, 

 and not at all characteristically fibrilled. All other nos. 83 of this 

 exsiccati that I have examined contain typical specimens of longis- 

 sima^ which would probably prove in this case that an error in 



