AKTIKIMAIU M. %S 



In Hispania (Dufour (1) ) et Algeria (Diiiieu;, ad arborcs 

 varias. — A. complanata Yee Ess. p. 54, S^^ppl. p. 39, 

 Mont. Chil.. p. 189, vix nc qiiidem iit varietas differens, 

 in America meridionali obvia, in Guyana frequens (Leprieur, 

 Melinon). Nee diffeire videtur .4. subrotxmda Fee Suppl. 

 p. 39, nee A. palmicola Acii. Syn. p. 5. 



20. A. asfroidea Ach. Syn. p. 6; Lcight. Brif. 

 Graph, p. 53, t. 8, f. 32; Opegrapha astroidea Ach.Meth. 

 p. 25; Sm. E. Bot. I. 1847; Wliliib. Fl. Lapp. p. 467; 

 Opegrapha atra var. macularis Fr. L. E. p. 367, L. S. 

 exs.2i;0p.atra\d.ri'. astroidea, radiata et obscura Scha?i\ 

 Enum. p. 153, L. H. exs. 16,317,586; .Arthonia radiata 

 Ach. L. U. p. !44; Moug. St. Vog. 362; Duf. in Jount. 

 phys. 1818, LXXXVir, p. 204; Opegrapha radiata Pers. 

 in Ust. Ann. 1, p. 7, t. 2, f. 3 A ; DC. Fl. fr. 2, p. 308 ; 

 Arth. vulgaris Sciiffir. Spic. p. 246; Koerb. S. L. G. p. 

 290; Arth. obscura Ach. I. V. p. 146 ; Duf. I. c. p. 204. 



Thallus hypophloeodes vcl vix uUus, plus minus deter- 

 minatus, limite baud raro cinctus obscuro, apothccia 

 nigra adpressa plana sleilato-difTormia vel irregnlariter 

 ramulosa, intus cinerascenlia, sa^pe eruinpentia et tunc a 

 culicula epidermidis, cui adnascitur , dilacerata [)artim 

 obtecta; spora? ovoideae 3-seplata?, longit. 0,011-16 mill., 

 crassit, 0,004-5 millim. — Gelatina hym. iodo coerulcscit, 

 dein obscure vinose tingitur. 



Var. S\VAUTZiAN.\. A . Sicartsiana Ach. in Schrad. Journ. 

 Bot. I, 3 p. 13, t. 4 f. 1 ; Sm. E. Bot. 2089; Ach. L. U. p. 

 142, Syn. p. 5 (2) ; Leight. L. Brit. exs. 70, Br. Graph, p. 



(1) In societate Platygraphcp dirineUcv '!^yl. in hb. Lcnornidnd.ad 

 corticeni Ceratonia'. Usee nova species comparanda esl cum 

 Lecidea amylacea (iiiirh.), sect hypothecio incolorii apolheciisque 

 fere plilycliionnlbus liilfert. 



(2) A. Swarl'iana var. cinerascens Ach. L. U. et Syn. 11. cc. est 

 A. astroidea apotheciis degeneratis. 



