234 CRYPTOGAMIA ANTARCTICA, [ Fuegia, the 
16. LEOIDEA arctica, Sommerf., Lapp. p. 156. Fries, Lich. Europ. p. 342. 
Has. Hermite Island, Cape Horn; on hard gravelly soil. 
17. 1۳00108۸ milliaria, var. c. ligniaria, Fries, Lich. Europ. p. 343. Lichen dubius, Engl. Bot. 
t. 2347.  Lecidea eleochroma, Ach.; nobis, in Lond. Journ. Bot. vol. iii. p. 636. 
Has. Falkland Islands; on dead twigs of Acena. 
A very puzzling species, differing from Z. eleochroma in the pale hypothallus. I am doubtful if the English 
Botany L. dubius be the same plant, or L. milliaria, Fries. The only others to which the Falkland Island one 
can be referred, are L. dolosa, Fries, and L. sabuletorum, Fr.: but after a careful examination of Schaerer’s specimen 
of the former, and Reichenbach’s of the latter, I have concluded that this belongs to neither of them. C.B. 
18. LecıpeaA abietina, var. rubens, Eschweiler, in Mart. Fl. Bras. p. 251. 
Has. Hermite Island, Cape Horn; on bark. 
I doubt not this being Eschweiler’s plant, but am not convinced of that being the same with the European Z. 
abietina. The hypophloedal crust appears to indicate its not being a true Lecidea, whence it may prove to be a 
Lecideal form of some Pyrenotheca ; to which genus the L. abietina properly belongs. 
16. GYROPHORA, Ach. 
1. GYROPHORA Enea, var. a. Scherer, Lich. Helvet. n. 149. 
Has. Falkland Islands; on quartz rocks; very rare and barren. 
It is remarkable that the Antarctic regions should present us with but a solitary species of this curious genus, 
which abounds so strikingly in the Arctic. In one respect they are replaced by Sticte, which are almost equally rare 
in the high northern latitudes. These latter affect an equable, as decidedly as the Gyrophore do an extreme climate ; 
and it is in the Falkland Islands, of all the Antarctic localities, that the Lichens are exposed to the greatest and most 
sudden vicissitudes. The G. ænea, considered by Fries as a variety of G. hyperborea, is a Scotch and American 
plant. 
17. OPEGRAPHA, Ach. 
1. OPEGRAPHA atra, Pers. ; Scherer, Lich. Helvet. n. 98. 
Has. Hermite Island, Cape Horn; on the bark of trees. Falkland Islands; on stems of ۰ 
18. ARTHONIA, ۰ 
1. Arrnonta polymorpha, Ach. ; Syn. Lich. p. 1. Eschweiler, in Mart. Fl. Bras. Crypt. p. 14. t. 9. f. 3. 
(tabula sub. nom. A. tremellose.) Lecanora micropthalma, nobis in Lond. Journ. Bot. vol. iii. p. 636. 
Has. Hermite Island, Cape Horn; on Winter's bark. 
19. PERTUSARIA, DC. 
1. PERTUSARIA communis, DC.; Engl. Bot. t. 611. Schaerer, Lich. Helvet. n. 118. 
Has. Hermite Island, Cape Horn; encrusting the bark of trees, abundant. Kerguelen’s Land; on 
rocks near the sea. Cockburn Island, Graham’s Land; on rocks. 
