CATALOGUE OF PLANTS. 257 



P. hispida (Schreb.), Tuck. 



On trees. (Eckfeldt) j Seal Harbor (Wilson). 

 P. csesia (Hoffm.), Nyl. 



On rocks. Seal Harbor (Wilson) . 

 P. obscura (Ehrh.), Nyl. 



On trees, etc. Seal Harbor (Wilson). 



* Var. endochrysea, Nyl. 



At the base of trees (Eckfeldt). 



P. adglutinata (Floerke), Nyl., var. pyrithrocardia, Mueller. 

 On trees. Seal Harbor (Wilson). 



PYXINE, Fries. 

 P. sorediata, Fries. 



On rocks. Seal Harbor (Wilson). 



UMBILICARIEI. 



UMBILICARIA, Hoffm. 



* U. cylindrica (L.), Delis. 



On rocks. (Eckfeldt.) 

 U. polyphylla (L.), Hoffm. 



On rocks. "Mt. Desert" (Tuckerman, Eckfeldt) ; Seal 

 Harbor (Wilson). 



U. nocculosa, Hoffm. 



On rocks. " Mt. Desert" (Tuckerman) ; Seal Harbor 

 (Wilson). 



U. Muhlenbergii (Ach.), Tuck. 



On rocks. (Eckfeldt) ; Seal Harbor (Kedfield). 



* U. hirsuta (Ach.), Stenh. 

 On rocks. (Eckfeldt.) 



* U. vellea (L.), Nyl. 



On rocks. (Eckfeldt.) 



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