LIGHENES EXOTICI. 37 



Flora 1869, p. 388, thallus K=, CaGl=.= In America arctica (Groenlandia, Terra Nova). 

 — Etiam in Europa. 



4. — Stirps Gyrophorœ polyphyllse Turn. et Borr. 



1042. Gyrophora Mûhlenbergii Ach. — Umhilicaria Mûhlenbergii Tuck., Nyl. Syn. II, 

 p. 15, tab. IX, fig. 11, ubi definitur; Enum. Lich. p. 107; Flora 1860, p. 418, et 1869, p. 389; 

 thallus CaCl + vel + .= In Asia boreali (Sibiria, Lich. Fr. Dchr. p. 74 et Lich. Middend. 

 p. 3). — In America utraque praesertim boreali (Groenlandia; Terra Nova; ins. Miquelon) 

 et tropicœ in montibus (Peruvia, Lich. exot. p. 217, ubi etiam definitur). 



1043. G. diffissa Nyl. Lich. Fueg. p. 23. — Umhilicaria Mûhlenbergii var. diffissa Nyl. 

 Addit. FI. chil. p. 149 et Syn. If, p. 10, ubi definitur; Enum. Lich. p. 107. = In America 

 meridionali (Chili). 



1044. G. erosa Ach. — Lichen erosus Web. — Umbilicaria erosa HofTm., Nyl. Syn. II, 

 p. 15, tab. IX, fig. 12; Enum. Lich. p. 108; Flora 1860, p. 418, et 1809, p. 388; thallus 

 K=r,CaCl = .= In Asia boreali (Konyambay, Lich. Fr. Behr. p. 27). — In America 

 septcntrionali et boreo-occidentali. — Etiam in Europa. 



1045. G. torrida Ach. — Umbilicaria erosa var. lorrida Nyl. Syn. II, p. 16, ubi defi- 

 nitur ; medulla K (CaCl) erythrinose reagit. = In Asia boreali (Konyambay, Lich. Fr. 

 Behr. p. 28) et orientali (Japonia, Lich. Jap. p. 35). — Etiam in Europa. 



1046. G. phsea Nyl. — Umbilicaria phœa Tuck. Lich. Califor. p. 115, Nyl. Flora 1869, 

 p. 389, thallus CaCl i velq=. — In America septentrionali (California). 



1047. G. hyperborea Ach. — Umbilicaria hyperborea Hoffm., Nyl. Syn. II, p. 16, 

 lab. IX, fig. 13, ubi definitur; Enum. Lich. p. 107; Flora 1860, p. 418, et 1869, p. 389; 

 thallus CaCl + vel zp . = In Asia boreali (Konyambay et Behring ins. , Lich. Fr. Behr. pp. 28 

 et 55). — In America utraque (Labrador, ubi variât; Mexico, Flora 1858, p. 379, mont. 

 Chimborazo ; mont Pichincha, Lich. exot. p. 217). — Etiam in Europa. 



1048. G. flocculosa Turn. et Borr. — LÀchen flocculosus Wulf. — Umbilicaria flocculosa 

 HofTm., Nyl. Syn. II, p. 17, ubi definitur; Flora 1860 et 1869 locis citât. ; U. polyphylla 

 var. deuslaFr. , Nyl. Enum. Lich. p. 107. Thallus CaCl i vel rp. =In Asia boreali (Konyambay, 

 Lich. Fr. Behr. p. 28). — In America boreali. — Etiam in Europa. 



1049. G. polyphylla Turn. et Borr. — Lichen polyphyllus. L. — Umbilicaria polyphylla 

 Schrad., Nyl. Syn. II, p. 18, tab. IX, fig. 14, ubi definitur; Enum. Lich. p. 107; Flora 1860 

 p. 418, et 1869 p. 389 (meliusdicenda G. glabra Ach.) ; ei levis saltem reactio medullarisCaCl 

 versus stratum gonidiale vulgo conspicitur. = In Asia boreali (Behring ins., Lich. Fr. Behr. 

 p. 55). — In America ulraque (Bolivia, Lich. exot. p. 217). — Etiam in Europa. 



1050. G. polyrrhiza Nyl. — Lichen polyrrhizus. — Umbilicaria polyrrhiza Fr., Nyl. 

 Syn. II, p. 19, ubi definitur; Enum. Lich. p. 107; Flora 1860, et 1869 loc. citât.; thallus 

 CaCl ^ vel =p.= In Asia (mont Himalaya). — Etiam in Europa. 



1051.G.sclerophyllaNyl. — Umbilicariasclerophylla Nyl. Flora 1862, p. 82, ubi definitur; 

 Flora 1869, p. 388, thallus K=, CaCl = .= In America boreali (Groenlandia). 



Gen. LXXIV. — Dermasticum Nyl. 



1052. D. ThunbergiiNyl. Enum. Lich. p. 116. — Endocarpon Thunbergii Ach. ; Umbili- 

 caria flavo-virescens Leigth. On a new species of Umbilicaria, in Linnean Society's Journal, 

 Botany, tom. X, p. 34, ubi a cel. Nylander definitur, et plate IV, fig. 17-28. == In Africa 

 meridionali (promont. Bonœ Spei). 



