222 



P. perforata (Jacq.) Ach. — On oak; specimens in N. Y. State Herbarium. 



P. perforata hypotropa (Nyl.) Tuck. — On Juniperns virginiana; determined by Dr. 

 Fink; reported in N. Y. State Mus. Bull. 150: 47. 1911. 



P. rudecla Ach. — On Juniperiis virginiana; specimens in N. Y. State Herbarium. 

 {Parmelia Borreri rudecla (Ach.) Tuck.) 



P. saxatilis (L.) Fr. — On rocks. 



P. sulcata Tayl. — Specimens in N. Y. State Herbarium. {Parmelia saxatilis 

 sulcata Nyl.) 



P. tiliacea Ach. — On trunks of Malus Mains. 



Peltigera canina (L.) Hoffm. — On earth; determined by Dr. Hasse. 



Pertusaria communis Lam. & DC. — On hickory, oak and Fagus grandiflora; deter- 

 mined by both Dr. Fink and Mr. Merrill. 



P. leioplaca (Ach.) Schaer. — On Quercus velutina; determined by Mr. Merrill; 

 specimens in N. Y. State Herbarium. 



P. multipuncta (Turn.) Nyl. — On hickory; in part determined by Dr. Hasse. 



P. pustulala (Ach.) Nyl. — Orient and Greenport on Myrica carolinensis; deter- 

 mined by Mr. Merrill. 



P. velata (Turn.) Nyl. — Determined by Dr. Fink. 



P. Wulfenii Lam. & DC. — On oak at East Marion; determined by Dr. Hasse. 



Physcia (§ Xanthoria) parietina (L.) DN. — Determined by Dr. Hasse. {Telo- 

 schistes parietinus (L.) Norm.). 



P. (§ Xanthoria )parietina aureola (Ach.) Nyl. — On Robinia Pseudo- Acacia; deter- 

 mined by Dr. Hasse. 



P. (§ Xanthoria) polycarpa (Ehrh.) Nyl. — Determined by Dr. Hasse. 



Physcia (§ Pseudophyscia) hypoleuca (Muhl.) Tuck. — Rare at Orient on Juniperus 

 virginiana bark; determined by Miss Mary F. Miller; specimens in N. Y. State 

 Herbarium. 



P. (§ Pseudophyscia) speciosa (Wulf.) Nyl. — Determined by Dr. Hasse. 



Physcia hispida (Schreb.) Tuck. — Orient, very rare on a Juniperus virginiana 

 stump; determined by Dr. Fink; reported in N. Y. State Mus. Bull. 150: 36. 

 1911. 



P. obscura (Ehrh.) Nyl. — On bark of Juniperus virginiana; determined by Dr. 

 Hasse. 



P. obscura endochrysea (Hampe) Nyl. — On Juniperus virginiana. 



P. stellaris (L.) Nyl. — On Juniperus virginiana; specimens in N. Y. State Her- 

 barium. 



P. tribacia (Ach.) Nyl. — On Juniperus virginiana and Robinia Pseudo- Acacia; also 

 on rocks. 



Platysma aurescens (Tuck.) Nyl. — Determined by Dr. Hasse. {Cetraria aurescens 

 Tuck.) 



P. ciliare (Ach.) Nyl. 



P. Fendleri (Tuck.) Nyl. — Determined by Dr. Hasse. 



P. glaucum (L.) Nyl. — Determined by Dr. Hasse. 



P. lacunosum (Ach.) Nyl. 



Pyrenula nitida Ach. — Greenport on trunks of Fagus grandiflora. 



Pyxine sorediata (Ach.) Fr. — On oak, Juniperus virginiana and Robinia Pseudo- 

 Acacia bark. 



Ramalina calicaris (L.) Nyl. — On Juniperus virginiana; in part determined by Dr. 

 1 1 asse. 



