LICHENES. 

 Pam. I. COLLEMACEI, n& 



1. LEPTOGIUxW, Fr. 



1. Leptogium tremelloides, {Linn.) Fr. 



Lichen tremelloides, Linn. Suppl. p. 450. 

 Collema tremelloides, Ach. Lichenogr. p. 655 ; Syn. p. 325. 



Leptogium tremelloides, Fr. PI. Homon. p. 255; PI. Scan. p. 293; Tuckerm. Lich. 

 Amer. Exs. n. 149 ; Nyl. Syn. Lich. p. 124. 



Var.-azureum, Eschw. 



Lichen azureus, Swartz. Fl. Ind. Occid. 3, p. 1895. 



Collema azureum, Ach. Lichenogr. p. 654 ; Swartz. Lich. Amer. p. 21, tab. 15 ; Ach. 



Syn. p. 325 ; Fee, Cryptog. p. 311, tab. 2, f. 17. 

 Collema tremelloides azureum, Eschw. in Mart. Fl. Bras. 1, p. 327. 

 Leptogium azureum, Montag. Crypt, in Sagra. Hist. Cuba, p. 114 ; Montag. & Van 



den Bosch, Lich. Javan. p. 67. 



Hab. Pico Ruivo, Madeira. Bay of Islands, New Zealand. Ovolau, 

 Feejee Islands. Oahu, Sandwich Islands. — All the specimens are per- 

 haps referable to the variety. But those from Oahu are elegantly 

 distinguished by their sinuate lobation, the sinuses being large and 

 rounded. 



2. Leptogium marginellum, (Sw.) Montag. 



Lichen marginellus, Swartz. Fl. Ind. Occid. 3, p. 1896. 

 Collema marginellum, Ach. Lichenogr. p. 656 ; Syn. p. 326. 



