255 



PRODROMUS 



SYSTEMATIS I\ATURALIS rATELLARlEARU.H 



SuLtribiis I. Callopismeae, * — Apothccia e 

 ihallo oriunda. 

 Gen. I. PATELLARM, Ehrh. (1785) — Apolliecla 

 superficialia vel immersa, excipulo thallode re- 

 cepta. Asci 4-8- vel rarissime 1 6-24- spori, 

 paraphysibus obvallati. Sporae ovoideae, uni- 

 loculares, pellucidae, nucleo liomogeneo. — 

 Thallus crustaceus effignratus vel nniformis. 

 Subgen. I. Placodium. — Thallus effìguratus. 

 Sect. 1. Euplacodium. — Apothecia sessilia, scu- 

 tellata. Thallus squamoso - imbricatus effìgu- 

 ratus vel ambitu radioso-lobatus. 

 ì. Paf. frustulosa, * (Lichen frustulosus, Dids.) 



2. Pat. similaris, * ( Psora similaris , Hoffm. — 



Urceolaria Lamarckil, De Cand.) 



3. Pai. henacensis, * (Psoroma benacensis, Mas- 



sai.) 

 ^K Pat. gypsacea, * (Lichen gypsaceus, Smith) 



5. Pat. crassa, * (Lichen crassus, Huds.) 



6. Pat. Dufoimi, * (Parmelia Dufourii, Fries) 



7. Pat. lentigera, * (Lichen lentigerns, Weber) 



8. Pat. friahilis, * (Lichen friabilis, Vili.) 



9. Pat. concolor, * (Lecanora concolor, Ramond) 



— Asci elongato-clavalj, 8 -spori; paraphyses 



