,i- 





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gentia nee depressa, Va mm. lata v. pauUo minora. Sporae om- 

 nino speciei. — A reliquis formis hujus polymorphae specie! 

 primo intuitu distinguitur minutie areolarum, et quidem speciem 

 disfcinctam simulat, sed sporae omnino conveniunt, et a var. 

 atrotirente quae tamen obscurior, vix fere nisi minutie partium 

 differt. — Cum Lecidea Tinei Tornabene Lich. sic. p. 17 t. 2. 

 Fig. Bj eodem loco crescente, ex icon, et descript. non quadrat. 

 Habitat ad lavam antiquam mentis Aetna (cl. Frey-Gessner). 



in. Dirina Ceratoniae Fr. Lich. Europ. p. 194. — Dtrma 

 Fr. Syst. orb. veg. p. 244, ex habitu et characteribus juxta 

 Lecanoram aut Vrceolariam (a cl. Stitzenberg. Flechtensyst, 

 p. 170 intra lecamam) locata, ubi strato hypotheciali crasse 

 nigro et perithecio interno nigro subinde valde adscendente et 

 in apotheciis optime evolutis (ex Algeria) Jam absque dissectionc 

 perspicuo typum praebuit sat alienum,, gonidiis chroolepoideis 

 ornata est et ab omnL grege lecanorina separanda et Graphideis 

 adscrlbenda est. — In Cactis prope Alcazar-el-Kebir (Prof. J. Bran). 



112. Opegrapha vana Pers. v. ligmtrina Mlill. Arg. Thallus 

 obsoletus, apothecia sessilia, parva, */, — V»— Va mm* longa, 

 Vb mm. lata, orbiculari- v. oblongo-elliptica, margines incurvi> 

 tui^iduli, diecus rimiformi-depressus, medio sublatior; sporae 

 specieij sc. circ. 27 {x longae, 7 ji latae, 5 — G-septatae. — Apothecia 

 multo minora quam in vulgar! 0. varia v. pulicari. — Habitat 

 ad ramulos Ligustri vulgaris prope Genevam (cl. Rome). 



113. Opegrapha marocccma Mtill. Arg. Thallus tenuis, albus, 

 rimulosus; apothecia ^/^ — ^/s ^^' ionga, adpresso-sessilia, elliptica 

 V. suborbicularia, primum conniventer marginata, mox immar- 

 ginata et plana v. convexiuscula varieque irregulariter gibbosa 

 V. difformia, ati'a, opaca, haud rare pauca confluentia; lamina 

 apice basique olivaceo-fusca, caeterum subhyalina, paraphyses 

 tenues et paucae, asci 8-spori, sporae hyalinae v. demum fu- 

 scescentes (4-) 6-loculares, oblongato-ovoideae, 22—25 }i longae, 

 8 — 10 ji latae. — Affinis 0, vartae v. pulicari et v. Tiothaej sed 

 apothecia minora, demum fere arthonioidea, in thallo albo sita 

 et sporarum ambitus latior. A proxima 0. c^ocmda Nyl. Lich. 

 de TAlg^rie p. 335 sporis latis et apotheciis aterrimis minus 

 aut vix albo-raarginatis distinguitur. — Habitat in cortice Popidi 

 aS>ae inter El-Arisch et Alcazar imperii Maroccani (Prof. J. Brun). 



114. Siigmatidivm polymorpfmm Mtlll. Arg. Thallus tenuiter 

 ^arinoso-tartareus, laevis v. obsolete gibboso-inaequalis, demum 

 rimulosus, albus v. flavescenti-lacteus, subdetermlnatus, absque 



