LICHENES— DR JEAN MULLER. 353 



Distrib. A common species of tropical and sub-tropical regions, found 

 also in west temperate Europe, and extending further northwards in America. 



var. intermedins, Midi. Arg. Lich. Nov. Gran. 40. 



Habitus ut in planta normali glabra speciei, sed ramilli ultimi capillacei nigrati. 



Socotra. B.C.S. nn. 1364 pro parte, 1440 pro parte. Ad ramos supra 

 Kischen alt. 800 m. Schweinf. 

 Distrib. South America. 



4. PARMELIA. 



Parmelia, De Not. Nuovi Caratt. de Farm. 378 ; Th. Fries Heterol. 58 ; Stitzb. Beitr. 174. 

 Parmelia, Ach. pr. p., Auct. pr. p. 



A large genus dispersed over all regions of the globe. 



1. P. latissima, Fee, Essai, Suppl. 119. 



a. f. isidiosa, Mull. Arg. L. B. ad n. 190. 



Ad ramos. B.C.S. n. 1412 pro parte. Ad saxa granitica supra Wadi 

 Kischen alt. 900 m. et 1000 m. (sterilis). Schweinf. 

 Distrib. Warmer regions. 



-»• 



b. f. sorediata, Nyl. Syn. p. 380. 

 Socotra. Ad saxa granitica supra Keschen alt. 900 m. (sterilis). Schweinf. 

 Distrib. Warmer countries. 



2. P. urceolata, Mull. Arg. var. nuda, Mull. Arg. L. B. n. 183. 



Socotra. Ad truncos arborum supra Kischen alt. 800 et 1000 m. (utraque 

 sterilis). Schweinf. 

 Distrib. Brazil. 



3. P. Soyauxii, Mull. Arg. Lich. Afric. Occid. n. 9. 



Similis P. quercifolice var. revohttce, Scbaer., microspora, subtus glabra ut in P. latissima, 

 Fee. 



Socotra. Saxicola supra Wadi Kischen alt. 600 m. (sterilis). Schweinf. 

 Distrib. Angola. Ascension. 



4. P. Schweinfurthii, Mull. Arg. in Proc. Roy. Soc. Edin. xi. (1882), 458. 



liHabitus ut in P. perlata v. ciliata, Nyl., sed tballus nonnibil argillaceo-v. ochroleuco-albescens, 

 opacus, subtus atro-fuscus, margine badius, fere usque ad raargiuem sat copiose et longiuscule 

 rbizinoso-criuitus, ad ipsos margines longe nigro-ciliatus ; laeinia? laxe adpressse, ad 

 margines partim adscendentes et varie incurvte, vulgo minute isidioso-lacinulatse et in 

 pagiua superiore hinc inde parcius v. copiose longiuscule isidiigerse. Apothecia podicellata, 

 TRANS. ROY. SOC. EDIN. VOL. XXXI. 2 Y 



