DISPOSITIONIS. 



3 



qno vero in pracsenti nori satis plano emendavi tantum 

 receptas sectiones (Cfr. p. 56)- 

 Sect. I. Thallo foliaceo discreto adnatus hypothallus. 

 ±. Imbricaria. Discus membranaceus, nudus, strato go- 

 nimo impositus. ThalLus foliaceus, membranaceus } 

 imbricatus. (p. 57). 



* Glaucescentes. Sp. 49 — 56 (p. 58—64). 

 ** Oliv aceo-fus c w. Sp. 57—6/ (p. 65—68). 



*** O chr oleucm. Sp. 62—66 (p. 69 — 7/). 

 **** Citrinw. Sp. 67, 68. (p. 72—75). 



2. P/iyscia. Discus ceraceus, subpruinato-velatus, stra- 

 to medullari impositus. Thallus foLiaceus 9 stelLa- 

 tus, var. adscendens. (p. 76)- 

 Spec. 69-78. O 76—86). 

 Sect. II. ThaLLus foliaceus membranaceus, dein gra- 

 nuloso-congLobatus. Hypothallus fibrillosus ma- 

 trici adnatus. PLurimoe spec. sunt Biatoroe per- 

 sonatce. 



3- Amphiloma. Thallus platyphyllinus. Excipulum 



thallodes aecessorium. (p. 87)» 

 Spec. 79— 81. (p. 87, 88). 



4. Psoroma. Thallus minute squamulosus. Apothecia 

 biformia ; e squamulis orta margine thallode ; ex hy- 

 pothallo margine proprio» (p. 89).* 



* Glauce s centes. Spec. 82 — 86. (p. 90—94). 

 ** Olivaceo-fuscae. Spec. 87—89. (p. 95—97). 



**** Citrinae. Spec. 90, 9/. Vere Parmel. (p. 98). 

 Sect. III. Thallus crustaceus, squamuloso-aut in am- 

 bitu effiguratus. HypothaLLus glaber. 



5. PLacodium. Apothecia plano-scutellata , disco im- 

 marginato nudo. Imbricariis et Biatoris acceden- 

 tes (p. 99). 



* Glaucescentes. Spec. 92— /00. (p. 99— /05). 



** Oliv aceo-fusce scentes. Sp. /0/—/06. (v. /06 — /09). 

 *** O chroleucae. Sp. /07— //2. (p. /09— //3). 

 **** Citrinae. Sp. //«?— //8. (p. //4-/2/). 



6. Psora. Apothecia ex urceolato scutellata, disco mar- 

 ginato normaliter caesio-pruinoso. Physczis et Le- 

 cideis affines. (p. 112). 



* Glaucescentes. Spec. //9 — /23. (p. /22 — /25). 

 ** Olivaceo-fusc. Spec. /24-/26. (p. /26-/28). 

 *** chr oleuca. Spec. /27. (p. /29). 

 **** Citrina. Spec. /28. (p. /30). 



Sect. IV. T/iallus crustaceus, uniformis. 



7- PatelLar ia. Apothecia plano-scutellata, disco immar- 

 ginato, haud caesio-pruinoso. Placodiis ffiatorisque 

 accedunt. (p. 131). 



