L I C H E N E S. 145 



17. UMBILICAKIA, Hcffm. 



Umbilicaria vellea, {Linn.) Fr. 



/lichen velleus, Linn. ex. auct. Ach. Lichenogr. p. 228, & Fr. infra. 

 Umbilicaria vellea, Fr. Lichenogr. p. 357 ; Nyl. Prodr. p. 65. 



Hab. Region of Sophora, on Mauna Loa, Hawaii. The specimen 

 infertile, and the determination therefore uncertain. 



18. PYXINE, Fr. 

 Pyxine Cocoes, (Ach.) Nyl. 



Lichen Cocoes, Sw. Fl. lnd. Occid. 3, p. 1891. 



Lecidea Cocoes, Ach. Lichenogr. p. 216; Swartz, Lich. Amer. p. 2, tab. 2. 



Pyxine Cocoes, Nyl. Enum. Gen. 1. c. p. 108. 



Hab. Twigs of trees, Carlshoff Island, Paumotu Group. Infertile, 

 but appears to belong to this species, which Mr. Wright has sent to 

 me in fine condition, from Cocoa palms in the Island of Cuba. 



19. P A N N A B. I A, Delis., Nyl. 

 1. Pannaria pannosa, (Sw.) Delis. 



Lichen pannosus, Swartz. Fl. Ind. Occid. 3, p. 1888. 



Lecidea pannosa, Ach. Meth. p. 84. 



Parmelia pannosa, Ach. Lichenogr. p. 465; Swartz Lich. Amer. p. 6, tab. 5. 



Pannaria pannosa, Delis, in Diet. Class, cit. Duby ; Nyl. Enum. 1. c. p. 109. 



Hab. Mountains of Tahiti. Paumotu Islands. Feejee Islands. 

 2. Pannaria rubiginosa, (Thunb.), Delis. 



Lichen rubiginosus, Thunb. Prodr. Fl. Cap. p. 176 ; Wahl. Lapp. p. 424. 

 Parmelia rubiginosa, Ach. Lichenogr. p. 467 ; Syn. p. 202 ; Fr. Lichenogr. p. 88 ; 

 Lich. Suec. n. 107. 



Pannaria rubiginosa, Delis. 1. c. ; Duby Bot. Gall. 2, p. 606 ; Nyl. Prodr. p. 66. 



Hab. Summit of Pico Ruivo, Madeira. Mountains of Tahiti. Ha- 

 waii, Sandwich Islands. 



37 



