NOTES AND EXHIBITS. 309 



Stereocaulon, Schreb. 



S. ramulosuwif Ach. — Upper Richmond River. Not common. 

 Orowing on the ground. 



Cladonia, Hffm. 



G. macilenta, Hffm. — Upper Macleay River. Common on 

 decaying logs. 



C. aggregata, Sw. — Upper Clarence River. Fairly common on 

 decaying logs. 



C. retipora, Floerke. — Upper Clarence River. Not common. 

 On decaying logs. 



Heterodea, Nyl. 



H. rtiuelleri, Nyl. — Upper Richmond River. Fairly common. 

 Growing on the ground. 



Ramalina, Ach. 



R. gracilis, Nyl. — Upper Richmond River. Common. On the 

 branches of trees and shrubs. 



Usnea, Hffm. 



U. harhata, Ach. — Head of Hastings River. Very common 

 on trees. 



U. trichoidea, Ach. — Upper Richmond River. Not common. 

 On trees. 



U. longissima, Ach. — Upper Macleay River. Common on 

 trees. 



Parmhlia, Ach. 



P. perforata, Ach. — Near Apsley Falls. Common on both 

 trees and rocks. 



P. tinctorum, Despr. — Head of Hastings River. Common on 

 both trees and rocks. 



P. Gonspersa, Ehrenb. — Upper Bellingen River. Fairly com- 

 mon both on bark and rocks. 



P. limhala, Laur. — Near head of Richmond River. Fairly 

 common both on bark and rocks. 



