112 



brick red; presumably the first are C. Grayi and the second C. 

 chlorophaea. 



As Dr. Evans suggests, the test will be interesting as be- 

 tween species of the subgenus Cladina, the "Reindeer Mosses," 

 some of which look much alike to the naked eye. I have just 

 begun the retesting of my attic full of collections, but I hasten 

 to inform other members of the Torrey Botanical club of this 

 new reagent so that they may have the pleasure of trying it as 

 well. Future lichen floras will have to include references to the 

 test with paraphenylenediamine as well as KOH. 



Hollis, Long Island, N. Y. 



