I. DISCOIDEI. 5.UMBILICARII. 29 



y hyperborea (Lich. hyperboreus Ach. in N. Act. 

 Stockh. 1794, p. 89, t. 2. f. 2); thallo plerumque 

 monophyllo , supra rugoso-papuloso , sublus reticulato- 

 lacunoso , utrinque nudo ; apotheciis frequentissimis. Umb. 

 aen. ^. hyperb. Spic. 91. ^. 364. Exs. 150. 151. Umb. 

 hyperb. Schrad ! IIoITm. pl. lich. t. 71. f. 1— 5.Fr! exs. 126. 

 Flk! Moug. &Nesll! exs. 1047. Umb. papillosa DC ! — 

 Ad saxa granitica usque ad summa alpium cacumina , Schreck- 

 horn Desorl in Fyrenaiis ^amond, Lozere Prost ! in Vogesis 

 Mougeot ! in Tyroli Sauter! Hercynia Hoffmann , Norweg. 

 Schimper ! Lapponia Hubener , e Terra nova Depreaux! 



7. Umbilicaria erosa (Lich. erosus Web. Spic. 259 

 Sw!) Thallus aeneo-fuscus, humectus olivaceus. , reticulato- 

 cribrosus , subtus ochroleucus vel fuscus, tophaceus, papillosus, 

 rarius fibrillosus. Apofhecia subnitida; innata, dein adpressa; 

 juniora plana, marginata , papiilata, vel plicis paucis concen- 

 tricis exarata; adultiora immarginata, convexa , plicis pluri- 

 bus irregulariter aggregatis , saepius longitudinaliter dispositis. 

 Spic. 93.364. Exs. 153. HofFm. pl. lich. t. 70. Schrad! DC! 

 Achl Funk! Moug. etNestl! exs.250.Reich.&Schub !— Adsaxa 

 granitica in alpib. Helv ! Gall! Germ! Angl ! Norw ! Lappon. 

 Hiibener ! — Ex Americae borealis insula Sitcha EschschoU ! 



j^. macularis. Schser. ; apolheciis innatis , orbicula- 

 ribus , planis , immarginatis , disco integro. — Lozere,, 

 Prost ! — Tum in hac , lum in proxime praecedente specie 

 apolhecia saepe solitarias offeruut tirellas, 



8. Umbilicaria polyrrhiz os (Lich. poIyrrhizusLinn. 

 spec. 1618). Thallus aeneo-fuscus , humectus fusco- 

 olivaceus , subtus ater , fibrilloso-pannosus. Apothecia. 

 depressa , tumida , absque excipuli margine ex meris 

 lirellis, a centro ad ambitum radiantibus, composila. Fr ! 

 exs. 129. Umb. depressa ^ spadochroa F. Spic. 83 

 ex parte. Schoer. in Ser. Mus. helv. t. 11. f. 12, 13, 

 15, 16. U. vellea Hoffm. pl. lich. t. 26. f. 3. Lich. 

 pellitus Ach! U. pellita DC! Moug. & Nestl ! exs. 343. 

 — Ad saxa granitica. Specimina helvetica 1. c. adumbrata et 

 cx m. Grimsel orta stcrilia sunt et forsan adU. velle am ^ f. 

 pertinent ; in insulae Corsicae m. Terrible Depreaux! in 

 Alsat. 3Iiihlenbeckl in Voges. m. Ilohneck ifow^/ Lozere et in 

 Cebennis Prosf.' Mortain, FaIaise2)e/»A'e.' in m. Canigou Schaer. 



