256 FLORA OF MOUNT DESERT. 



* P. lanata (L.), Wallr. 



On rocks. (Eckfeldt.) 

 P. caperata (L.), Acli. 



On trees and decorticated wood. (Eckfeldt, Wilson.) 

 P. conspersa (Ebrh.), Acli. 



On rocks. (Eckfeldt) ; — Seal Harbor (AVilson). 

 P. centrifuga (L. ), Ach. 



On rocks. Seal Harbor (Wilson);— <<Mt. Desert" (Tucker- 

 man). 



P. incurva (Pers.), Fries. 



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

 (Wilson). 



P. ambigua (Wulf.), Acb. 



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



* Var. albescens, Walil. 



On rocks. (Eckfeldt.) 



PHYSCIA, DC. 



P. speciosa (Wulf.), Nyl. 



On shaded rocks. Seal Harbor (Wilson). 



*P. hypoleuca (Muhl.), Tuck. 



On trees. (Eckfeldt.) 

 *P. aquila (Ach.), Nyl., var. detonsa, Tuck. 



On rocks, etc. (Eckfeldt.) 



*P. pulverulenta (Schreb.), ISTyl., var. leucoleiptes, Tuck. 



(Eckfeldt.) 

 P. stellaris, L. 



On trees and rocks. (Eckfeldt) ; — Seal Harbor (Wilson). 



* P. astroidea (Pries), Nyl. 



On trees. (Eckfeldt.) 



*P. tribacia (Ach.), Tuck. 



On old tree trunks. (Eckfeldt, Wil§on.) 



