Bd. IV: il) TUE LICHENS. 23 



Diplotomma Fw. 

 Diplotomma alboatrum (Hffm.) Tu. Fr. — Tu. Fr. Lieh. Scand. p. 607. — 



Literature: Darbish. Fram, p. 22. — Helle. N. Z. p. 117. 

 Distribution: Northern Africa and America; New Zealand; Europe. 



Locality: South Shetland Islands* (21); Graham Land* (22). -- On stone, in fruit. 



Rhizocarpon Ram. 

 Rhizocarpon geminatum (Fw.) Tu. Fr. — Th. Fr. Lieh. Scand. p. 623. 



Literature: DARBISH. Fram, p. 23. 



Lccidca concreto (Ach.) Wain. f. geminata (Flot.) Wain. — Wain. Belg. p. 31. 



Rhizocarpon Montagnci Krb. — Hellb. N. Z. p. 119. 

 Distribution: Arctic America and Asia; Eastern Africa: Europe; New Zealand: Antarctis. 



Localities: Falkland Islands* (9); Graham Land (30). -- On stone, in fruit. 



Rhizocarpon geographicum (L.) D. C. — Tu. Fr. Lieh. Scand. p. 622. 



Literature: Darbish. Fram, p. 23. — Darbish. Ork. p. 2. — Darbish. Nat. Ant. p. 2. — Hellb. N. Z. 



p. 11S. — Mill. Austr.-Georg. p. 327. — MÜLL. Beitr. No. 999. — Mi/ll. Speg. No. 97. — 



Zahliir. Gauss, p. 41. 

 Lecidea geographica (L.) Schaer. — Blackmax Ant. p. 320. — Cromb. Kerg. p. 191. — Hook. Fl. 



Ant. II, P. 539. — Hue Charcot, No. 16. — Wain. Belg. p. 31. 

 Distribution: An arctic and alpine cosmopolitan plant; Antarctis. 



Localities: Falkland Islands (8, 9); South Georgia (13 a, 14, 17, 20). — On stone, in 



fruit. 



Cyrophora Ach. 

 Gyrophora anthracina (Wulf.) Krb. - Til. Fk. Lieh. Scand. p. 165. 



Literature: DARBISH. Fram, p. 24. — Darbish. Nat. Ant. p. 3. 



Umbilicaria leiocarpa D. C. — Wain. Belg. p. 9. 

 Distribution: Arctic and alpine portions of America and Europe; Antarctis. 



Localities: Graham Land (28, 32, 34). — On stone. 



Gyrophora Dillenii TUCK. — TUCK. N. A. L. I. p. 87. 



Literature: Darbish. Nat. Ant. p. 3. 



Umbilicaria Dillenii TUCK. — Hue Charcot. Xo. 12. — Tick. N. A. L. I. p. S7. — Wain. Belg. p. 9. 

 Distribution: Northern America; Antarctis. 



Localities: Graham Land (25, 28). — On stone. 



Stereocaulon Schreb. 



Stereocaulon alpinum Laurer. — Til. Fr. Lieh. Scand. p. 48. 



Literature: Darbish. Fram. p. 25. — Hook. Fl. Ant. II, p. 529. 



Distribution: Arctic and Southern America; Mexico; Northern Asia; Alpine Europe. 



Locality: South Georgia* (13 a, 14, 15, 17 fr., 18). — Over earth and moss. 



