( -.m ) 



serp. Ach. L. V. p. 269, Syn. p. 83; Opegr. Diif. 1. c; Oyj. 

 nerpentinn et glaucoma Chev. Fl. Paris, p. 538 et 539 [ et 0. 

 pulverulenta pr. p. ] ; Op. scripta var. serp. Schapr. L, H. 91 , 

 Enum. p. 151 , Fr. 1. c, L. S. exs. 313; Op. venosa Vers, in 

 Act. Wetter. Ges. 2, p. 15, t. 10, f. 2; Gr. diffracta Leight. Br. 

 Graph, p. 39), prapcipue ad fagos et castaneas. — In teriis exo- 

 ticis adest Graphis huic affinis differensque tantum hypolhecio 

 eliam inferne continue denigratum (ut Gr. dendrilica a Gr. 

 Smithii), Gr. assimilis Nyl. in Mus. Par. (a eel. Montagne sub 

 nominibus Op. ftcripta et Op. atra confusa in Hist. Chil. viii , 

 p. 183 et IHtV). 



3. iir. (leiidritira Ach. L. U. p. 271, Syv. p. 83; Opegr. dendri- 

 tica Ach. Meth. p. 31, t. 1, f. 10; Sm. E. Bot. t. 1750, Fr. L. E. 

 p. 372, Schser. Enum. p. 152, L. H. exs. 585; Arthonia den- 

 driticaJ)[iL Journ. Phys. 1818, p. 206; Platygramme dendri- 

 ticum Mey. in Spr. Syst. Veg. iv, p. 254; Hymenodeclon dendri- 

 licum height. Br. Gr. p. 4, t. 7, f. 23. Apothecia immersa 

 plana plerumque c<esio-pruinosa , divergenler saepeque radiatini 

 ramosa; sporse oblongo - cylindraceae , nigrescentes , longit. 

 0,022-37 millim., crassit. 0,007-8 millim., loculis transversis 

 4-8, hypothecium lateribus infraque continue tenuiter infuscatum. 

 ■ — In Gallia ad St-Sever exiniie copiosa , in cetera occidental! et 

 uieridionali minus frequens , jam ad Parisios desinens, niihi ibi 

 saltern non obvia. Apotheciis radiatim ad maculas orbiculares 

 varie dissectas abeuntibus est var. medusula (Op. mediisula Pers. 

 in^c^ Wetter. Ges. 2, p. 15, t. 10, f. 1, ?, DG. Fl. Fr. 0, p. 

 171, Ach. Syn. p. 334, Fr. L. E. p. 372; Arlh. obtusangula 

 Duf. Journ. Phys. 1818, p. 207), ad St-Sever cum formis typicis 

 variis. 



i. Clr. ^iniitliii Leight. Br. Graph, p. 41 ; Opegrapha scripta Sm. E. 

 Bot. t. 1813; Op. dendritica Desmaz. Cr. Fr. ser. 2, 42; Gr. 

 inconspicua Fee Ess. p. 39 (saltem pr. p., ex hh. auct.). Hypo- 

 thecio infra non infuscato, sed incolore (in sicco albo vel albido, 

 ut hymenium) differt a formis similibus (apotheciis minus ramo- 

 sis) pr*cedentis. — Ad castaneas, fraxinos, tilias etc. in Gallia 

 occidentnli hand rara videlur. 



