PLANTS OF NORTH ELBA 185 



Peltigera polydactyla {Neck.) Hoffm. 



Rocks and trees. Not common. Vicinity of Lake Placid. Atkinson. 



Indian pass. 



Peltigera rufescens {Neck ) Hoffm. 



Rocks. Freemans Home. 



Peltigera canina (Z.) Hoffm. 



Damp shaded ground, mossy banks, swamps and mossy prostrate 

 trunks of trees. Very common. 



P. canina spuria Ach. 

 Vicinity of Lake Placid. Atkinson. P. canina spongiosa Tuckm. was 

 found on Mt Marcy, but was not seen in North Elba. 



PANNARIACEAE 

 Pannaria rubiginosa {Thunb.j Delis. 

 Rocks and trees. Vicinity of Lake Placid. Atkinson. 



P. rubiginosa conoplea Fr. 

 Habitat and locality as in the species. Atkinson. 



Pannaria leucosticta Ttickm. 

 Trees and rocks. Vicinity of Lake Placid. Atkinson. 



COLLEMACEAE 

 Ephebe pubescens Fr. 



Rocks. Brewster farm. Sterile. 



Collema nigrescens {Huds.) Ach. 

 Trunks of trees. Valley of the Ausable. 



Leptogium tremelloides {L. /.) Fr. 

 Rocks and trees. Commonly sterile. Indian pass. Fertile. 



Leptogium myochroum saturninum Schaer. 

 Rocks and trees. Vicinity of Lake Placid. Atkinson. 



Hydrothyria venosa Russell 

 Submerged rocks. Lake Placid. Atkinson. 



