LICHEXES. 



249 



lake is small compared with that of Champlain ; these 

 conditions favor the floating-away of the vapor as fast as 

 it rises from the lake, with tlic current of the prevailing 

 wind. 



These meteorological conditions -modify very material- 

 ly, not only vegetation, but the character of the prevail- 

 ing diseases, of the Champlain valley. 



Catalogue oj the C)yptoganioiis or Flcxvcrlcss Plants 

 of Vermont. — By C. C. Frost., Frattlcboroi^gh, Ver- 

 mont. — Cotitimicd from page 240. 



LICHENES. 



Biatora chlorantha. Tuck. Pine bark. 



V>. viridescens, Fr. Earth. 



1?. decolorans. Fr. Earth on rocks. 



B. cinnabarina, Sommerf. Trunks. 



B. vernalis. Fr. Trunks, eartli and stones. 



B. sanguineo-atra. Xvl. Earth and mosses. 



B. ecigua, Fr. Smooth bark. 



B. rivulosa, Fr. Granite rocks. 



\\. lucida, Fr. Rocks, stones, and dead wood. 



B. cyrtella, Ach. Trunks and mosses. 



B. mixta, Fr. liark of trees. 



B. atro-piu'purea. Mass, Bark of lieinlock. 



B. trachona, Flot, Granite rocks. 



