28 OTTO VERNON DARBISIIIRE, (Schwed. Südpolar-Exp. 



Placodium D. C. 

 Placodium ambitiosum nov. spec. 



Description: p. S, pi. I, fig. 13. 



Locality: Falkland Islands* (9 fr.). — On stone. 



Placodium elegans (Link.) NvL. - Tu. Fr. Lieh. Scand. p. 168. 



Literature: Blackman Ant. p. 320. — Darbish. Fram, p. 30. — Darbish. Nat. Ant. p. 4. — Darbish. 

 Ork. p. 3. — NYL. Fueg. p. 27. 



Amphiloma elf ranulcsum Schaer. — MÜLL. Austr. -Georg, p. 3Z3. 



Caloplaca elegans (Link) Tu. Fr. — Tu. Fi;. Lieh. Scand. p. 16S. — Hf.i.lb. N. Z. p. 66. 



Lecanora elegans ACH. — CROMB. Kerg. p. 1S4. 

 Distribution: In arctic and alpine regions all over the world. 



Localities: Tierra del Fuego (1 fr., 4); South Georgia (13 a, fr.); Graham Land (22, 

 28, 30, fr., 34, fr.). — On stone, generally in fruit. 



Placodium lucens NYL. — Wain. Belg. p. 23, pi. I, fig. 4. 



Literature: 



Caloplaca lucens (NvL.) A. Zaiilbr. — A. Zaiilbr. Gauss, p. 29 et 50. 



Lecanora elegans f. /»cens Nye. — CROMB. Kerg. p. 184. 



Lecanora murorum AcH. v. farcta. — Hook. Fl. Ant. II, p. 535. 



Caloplaca elegans (Link) Th. Fr. f. farda Bab. — Th. Fr. Lieh. Ant. p. 20S. 

 Distribution: Kerguelen and Cape Horn. 



Localities: Tierra del Fuego (4); Falkland Islands (8). — On stone, always in fruit. 

 Placodium miniatum HFFM. - Til. Fr. Lieh. Scand. p. 170. 



Literature: Darbish. Fram, p. 30. 



Caloplaca murorum v. viiniata (Hi em ) Til. Fr. — Th. Fr. Lieh. Scand. p. 170. — Hellb. N. Z. p. 68. 



Lecanora miniata AcH. — Hook. Fl. II. p. 535. 

 Distribution: America, Europe and New Zealand. 



Localities: Falkland Islands* (9); South Georgia (13); Graham Land* (28, 30, 31). — 

 On stone, in fruit. 



Placodium murorum (HFFM.) D. C. — Til. Fr. Lieh. Scand. p. 170. 

 Literature: Darbish. Fram, p. 30. — Darbish. Nat. Ant. p. 4. — Wain. Belg. p. 23. 

 Caloplaca lobulata (Smrft.) Th. Fr. — Hellb. N. Z. p. 67. 



Caloplaca murorum (Hffm.) Til Fr. — Th. Fr. Lieh. Scand. p. 170. — Hellb. N. Z. p. 6S. 

 Lecanora murorum AcH. — Hook. Fl. Ant. II, p. 535. 

 Distribution : Cosmopolitan. 



Localities: South Georgia* (12); South Shetland Islands* (21); Graham Land (22, 

 28). — On stone, in fruit. 



Placodium regale Wain. -- Wain. Belg. p. 23, pi. I, fig. 1 — 2. 



Literature: 



Polycauliona regalis (Wain.) Hue. — Darbish. Nat. Ant. p. 4. — Hue Charcot, No. 7. 



Placodium fruticulosum Darbish. — Darbish. Ork. p. 3. pi. 3. 

 Distribution: In the Antarctic region only. 



Localities: South Shetland Islands (21); Graham Land (28). — On stone, in fruit. 



