PLANTS OF NORTH ELBA I 83 



Parmelia conspersa {Ehrh.) Ach. 



Bare rocks and boulders. Very common. It ascends to the top of 

 Mt Marcy. The thallus is generally orbicular and adorned with nume- 

 rous apothecia centrally located. 



Physcia speciosa {Ach>^ Nyl. 

 Trunks of willows. Banks of the Ausable. 



Physcia aquila {Ach) Nyl. 

 Trunks of trees. Wood farm and trail to Indian pass. 



P. aquila detonsa Tuckm. 

 Trees. Vicinity of Lake Placid. Atkinson. Near Mountain View 

 house. 



Physcia stellaris (Z.) Wallr. 



Trees and rocks. Common. P. stellaris aipolia Nyl. occurs on rocks 

 in the eastern part of the county and may yet be found in North Elba. 



Physcia obscura {Ekrh.) Nyl. 

 Trees and rocks. About Lake Placid. Atkinson. 



Physcia setosa {Ach.) Nyl. 

 Rocks. Brewster farm. It occurs also at Cascade lake. 



Physcia adglutinata {Floerk.) Nyl. 

 Trunks of beech trees. Rare. Freemans Home. 



Pyxine sorediata Fr. 



Trunks of trees and rocks. Very common but only occasionally found 

 fertile. 



- UMBILICARIACEAE 



Umbiliciria Muhlenbergii {Ach.) Tuckm. 



Bare rocks. Vicinity of Lake Placid. Atkinson. Brewster farm. 



Umbilicaria Dillenii Tuckm. 

 Rocks. Pulpit rock and Indian pass. Sterile. 



Umbilicaria pustulata {L.) Hoffut. 

 Bare rocks. Lake Placid. Atkinson. Top of Mt Mclntyre. 



U. pustulata papulosa Tuchn. 

 Rocks. Near Lake Placid. Atkinson. 



