S On the Lichens near Neiv- York. 



5. Gtrophora. 



1. pustulata. Id. p. 66. On rocks. Rare. Frond under- 



neath deeply pitted, smooth ; apothecia rare, disk 

 smooth. 



2. papulosa. Id. p. 67. Ibid. Apothecia small, very nu- 



merous, and aggregated, urceolate and rarely gyrose. 



3. Pennsylvanica. Id. p. 67. Frond subolivaceous, rough 



granular underneath ; apothecia margined. 



4. Muhlenbergii. Id. p. 67. Ibid. Frond wrinkled and 



scaly underneath ; apothecia sunk in the pits. 



5. vellea. Id. p. 67. Ibid. Rare in fruit. Frond large, 



coriaceous, sooty ; apothecia generally towards the 

 circumference of the frond. 



6. Opegrapha. 



1. macularis. Id. p. 72. On smooth bark. Apothecia clus- 



tered and forming black spots. 



2. herpetica /?. disparata. Id. p. 73. Ibid. Apothecia 



short, broad ; crust of a reddish olive hue. 



3. vulgata. Id. p. 73. Trunks. Apothecia turgid, cylin- 



dric. 



4. notha. Id. p. 76. Ibid. Disk of the apothecia without 



the cleft. 

 var. (3. gregaria. Ibid. Apothecia crowded j disk flex- 

 uous and plicate. 



y. ccesia. Ibid. Apothecia with a grayish prui- 

 nose disk. 



5. vulvella. Id. p. 77. Ibid. Apothecia elliptic, gaping in 



the middle. 



2. Order. HETEROGENEI. Apothecia with a solitary pe- 

 rithecium, including the nucleus. 



f Apothecia margined, 

 7. Graphis. 

 1. scripta. Id. p. 81. On smooth bark. Crust somewhat 

 shining, white, black bordered j apothecia semi-ira- 

 mersed. 



