( ill ) 



in Yogesis Mougeol. Yix sit nisi varielas praecedentis , ut iiidigi- 

 tavit jam Le Prevost (v. Fries 1. c). 



2. A. lui'ida Ach. L. U. p. 143 Siju. p. 7, Schaer. Emwi. p. 24^2, 



t. 9, f. G, L H. \l', Fv: L. S. i , Moug. St. Vorj. 1325, Leight. 

 Br. Graph, p. 57, t. 8, f. 38, Nyl. Arth. 91 ; Conianghm vulgare 

 Fr. L E. Myriangiiim inconspimum Babingt. Fl. New. Zeal. 

 p. 46, t. cxxviii ; Arthonia vinosa height, in litt. p. 378, pr. 

 p.; — Ad quercus, abietes , pinos etc. in Gallia rarius, adhuc 

 parcius ad ligna. Apothecia fusca vel fusco-nigricantia rotundata 

 vol oblonga, sporae ssepius uniseptatse. Variat 1) helvola, ad ligna 

 abietina indurata Vogesorum lecta a eel. Mougeot , apotheciis 

 pallidioribus crebrioribus vel fere confluentibus ; 2) spadicea 

 (Arthonia spadicea Leight. L. Br. exs. 97, Br. Graph, p. 57, 

 Nyl. L. P. 86), ad quercus, castaneas, juniperos saltern ad Pari- 

 sios rarius vigens, similis fere var. helvoUe, sed apotbeciis fuscis, 

 sporis niinoribus. 



3. A. iiriiinosa Ach. L. U. p. 447, Syn. p. 7, Duf. 1. c, p. 208, 



Moug. Si. Vog. 1159, Nyl. Arth. p. 90, L. P. 83; Parmelia 

 impoUta Ach. Melh. p. 160, Fr. L. E. p. 183, L. S. exs. 202; 

 Arthonia impulita Borr. , Schter. Emmi. p. 242, L. H. 506, 

 Leight. Br. Graph, p. 55 , t. 8 , f. 35. — Ad quercus annosns et 

 ad aesculos ulmosque in Gallia frequentissima. Apothecia oblonga 

 vel oblongo-difformia ssepe lobato-divisa. Variat iisdem 1) fuscis 

 nudis SUBFUSCA , vel 2) gracilescentibus , eleganter radiato-par- 

 titis MEDusuLA Nyl. L. P. 84, quaruni transitus baud raro occur- 

 runt. Ad banc pertinet speciem quoque Arth. fuliginosa Flot. in 

 Bol. Zeil. 1850, p. 569. 



4. A. velata Nyl. Arth. p. 91. Coniangiiim. velatum Flot. ex Zw. 



Exs. 48. — Ad quercus in sylvis Galliai rarius, cum pra^cedente, 

 a qua verisimiliter non specie differt. Apothecia minora rotundata 

 fusco-nigricantia albo-velata (1). 



(1) Hie locum optime habeat Arlh. cinereo-pruinosa Schaer. Enum.'.p. 2i5, L. H. 

 2ril [A. bifnrmis), Nyl. Arlh. p. 9i, post. A. velatnm disponenda. Arthonia Schareri 

 Mass. Symm. est var. lohnta ejusdem apotheciis inidis fuscis, sporis sa>pe niinoribus), 

 longit. 0,010 -16 niilliiu., crassit. 0.033-0,006 uiillini. 



