86 



in siromatibus ihallinis aggregalim sita, gymnocarpica, 

 incluso-arlhonioidea; paraphyses connexae; sporae e 

 hyalino rufo-fuscescentes, iransversim divisae, loculi 

 simplices. 



Est quasi Arthonia composita (unde iiomen), habilu 

 aiialogum Chiodecton referens, quod similiter essel 

 Plutygrap/ia composita. Fere cum Chiodectonis sect. 

 Enlerographa Miill. Arg. confluil, sed sporae clare 

 arihonioideae, demum fuscescentes, loculo summo 

 mulio majore. 



166. Synarihoiiia bicolor Miili. Arg. (sp. nov.)- 

 — • Thallus albidus, tenuissimus, laevis; gonidi- 

 orum arli(!uli vulgofusiformi-ellipsoidei ; slromata 

 1/8-1/3 mm. lata, hemisphaerica, discreta v. hinc 

 inde 2-4-Fialim confluenlia, simplicia 1-5-carpica, 

 thallo paulo albiora, inlus concolora, apice dis- 

 culis tlialamiorum fuscesceiiti-carneis oculaia, 

 unde discnli margine albo cincli; apoihecia baud 

 omergenlia, primum ihallino-albovelata, dein 

 verticenuda; perilbeciumlaterale rudimeniarium, 

 in sectione superne iineisduabus leviterobfuscatis 

 indigitatum, basi deficiens; paraphyses tenuissi- 

 mae, crebcrrime intricatim connexae; sporae in 

 ascis eunealo-obovoideis 8-nae, elongaio-obovoi- 

 deae, ^4-t27 ^ longae, 8 i/2-9 1/2 // lalae, o-Iocu- 

 lares, loculus summus reliquis duplo el ullra 

 longior el paullo lalior. — San Jose, corlicole 

 (n. 5292). 



167. f'hiodecton rubro-linctum Nyl. Prodr, Nov. Gran , p. HO. — 

 Sur les Ironcs dans les pSturages : Juan Vinas (n. 5159 sterile 

 ut Tulgo). 



