CATALOGUE OF PLANTS. 261 



LEPTOGIUM, Fries. 



L. pulchellum (Ach.), Njl. 



On tree trunks, etc. (Eckfeldt.) 

 L. tremelloides (L. f.), Fries. 



On rocks and tree trunks. (Eckfeldt) ; — Seal Harbor (Wil- 

 son); —Beech Cliff (E. Faxon). 



* L. chloromelum (Swz.), Nyl. 

 On old tree trunks. (Eckfeldt.) 



LECANOREI. 



PLACODIUM, DC. 



P. elegans (Link), DC. 



On rocks. (Eckfeldt) ; — Seal Harbor (T. G. White). 



* P. murorum (Hoffm.), DC. 

 On rocks. (Eckfeldt.) 



* P. cinnabarinum (Ach.), Anz. 

 On rocks. (Eckfeldt.) 



* P. citrinum (Hoffm.), Leight. 

 On old mortar. (Eckfeldt.) 



P. aurantiacum (Lightf. ), Naeg. & Hepp. 



On trees, dead wood, etc. (Eckfeldt) ;— Seal Harbor (Kedfield). 



* P. cerinum (Hedw.), ISTaeg. & Hepp. 

 On trees, etc. (Eckfeldt, Wilson.) 



Var. pyracea, Nyl. 

 (Eckfeldt.) 



* P. ferrugineum (Huds.), Hepp, var. discolor, Willey. 



On oak trees. " Mt. Desert" (Tuckerman). 



* P. camptidium, Tuck. 



On smooth tree trunks. Southwest Harbor (Eckfeldt). 

 P. vitellinum (Ehrh.), Naeg. & Hepp. 

 On dead wood. Seal Harbor (Wilson), 



