LIGHENES EXOTIGI. 187 



3102. Arthonia pertabescens Nyl. Lich. Jap. p. 85, ubi definitur. = In Asia 

 orientali (Japonia). 



3103. A. taediosula Nyl. Lich. Jap. p. 85, ubi detinitur. = In Asia orientali (Japonia). 



3104. A. varians Nyl. Lich. Scand. p. 260, ubi definitur. — Lichen varians Dav. — 

 Arthonia glaucomariaNyX. in Syn. Arlhon. p. 98 definita et A. parasemoides Nyl. in Syn. 

 Arlhon. loc. citât, et in Lich. Alger, p. 330 aeque ac in Prodr. Lich. Gall. p. 168 definita; 

 utraque in Enum. Lich. p. 133. = In Africa boreali (Àlgeria, Quelq. Lich. Alger, p. 216). 



— Etiam in Europa. 



3105. A. hibernica Nyl. in Flora 1876, p. 237, ubi definitur; in Flora 1885, p. 449. = 

 In America boreali (New York, Massachusetts, Illinois et Florida, Will. Syn. Arlhon. p. 30). 



— Etiam in Europa (Hibernia). 



3106. A. abrothallina Nyl. Syn. Arthon. p. 99 et Enum. Lich. p. 133. = In America 

 antarctica(ins. Maclovianis, ubi viget super thallum Sliclse d'Urvillei Del.). 



13. — Stirps Arthoniœ dispersœ Nyl. 

 Sporae 1-septatae. 



3107. A. dispersa Nyl. Lich. Scand. p. 261, ubi definitur; A. minutula Nyl. Syn. 

 Arthon. p. 102 et Prodr. Lich. Gall. p. 169, ubi definitur; Enum. Lich. p. 133. — Opegra- 

 pha dispersa Schrad. = In Oceania (Nova Zelandia?). — Etiam in Europa. 



3108. A. subminutula Nyl. in Flora 1885, p. 312, ubi definitur. = In America septen- 

 trionali (New Bedford). 



3109. A. dispersula Nyl. in Flora 1876, p. 285, ubi definitur; A. Auslini Willey Syn. 

 Arthon. p. 3, Nyl. Lich. Jap. p. 108, ubi denuo definitur. = In Africa boreali (iEgypto). — 

 In America septentrionali calida (Florida). 



3110. A. subdispersa Nyl. in Flora 1886, p. 104. = In America tropica (ins. Cuba). 



3111. A. subdispersula Nyl. Lich. N. Zeland. 1888, p. 148, ubi definitur. = In Ame- 

 rica tropica (ins. Cuba). 



3112. A. ochrodiscodes Nyl. Lich. Jap. p. 107, ubi definitur; epithecium K purpu- 

 rascit; species peculiaris, fere Melaspilea. = In America septentrionali calida (Florida). 



3113. A. tsedescens Nyl. apud Willey Syn. Arthon. p. 30. = In America septentrio- 

 nali calida (Florida). 



3114. A. pandanieola Nyl. Lich. exot. p. 246, ubi definitur; Syn. Arlhon. p. 103; 

 Enum. Lich. p. 134. Ab hac specie non differt A. Pandani Nyl. Lich. îles Marquis, p. 302, 

 Nyl. in litt. = In Oceania (ins. Nukahiva). 



Subgen. II. — Allarlhonia Nyl. 

 Species in quarum thallo viridia gonidia simplicia seu haplogonidia reperiuntur. 



3115. A. mediella Nyl. Lich. Scand. p. 259, ubi definitur; A. trabinella Th. Fr., Nyl. in 

 Flora 1861, p. 372. = In America boreali (Port-Clarence, Lich. Fr. Behr. pp. 67 et 68 in 

 nolula). — Etiam in Europa. 



3116. A. microsperma Nyl. Enum. Lich. p. 133. — Lecidea complanata Fée Essai 

 p. 112 et Supplém. p. 103; sporae 1-septatae long. 0,009-14 et crass. 0,0035-45 millim. = 

 In America tropica. 



3117. A. biseptella Nyl. apud Willey Syn. Arthon. p. 29. « Thallus macula alba vel 

 albida, nigricanti-limitata indicatus. Apolhecia nigra, parva, subangulosa vel astroideo- 

 difformia, plana; sporae 8 n:p incolores, oviformes, vulgo bi-septatœ (mixtis 1-septatis), 



