222 III. VERIiUCARIOlDEI. 13. Y ERRUCARII. 



30. Verrucaria glabrata (Achl syn. 91). Thallus 

 raembranaceo-cartilagineus , albus , laevigatus , effusus. 

 ^jJO^Aeaa hemisphaerico-conoidea vel deformia, majuscula, 

 innata , ad basiu a thallo coronata \ osliolo papillato , per- 

 tuso. Spic. 57. 341. Exs. 110. — Ad arbor. variar. 

 corticem; in Helv. Schl! Schaer; Germ. Fw / exs. 39. 

 Gall. Moug. & N! exs. 950. 



31. Verrucaria biformis (Borr. in EB. suppl. I. 

 l. 3617. f. 1). Thallus membranaceo-cartilagineus, albo- 

 cinerascens, laevigatus, effusus. Apothecia hemisphaerico- 

 conoidea vel deformia, minuta, innata, juniora ad.basin a 

 thallo coronata , atro-pruinosa ; adultioralibera, nuda ; ostiolo 

 papillato, tandem pertuso. Spic. 56. 341. Exs. 109. — 

 Ad Quercus juniores et Tilias Helvet. Schaer; Sudetor. Ftp/ 

 Heidelberg v. Zwackhl Angl. Borr ! 



Genus XXVIU. THROMBIUM (Wallr. crypt. germ. I. 

 p. 387). Apothecium: excipulum simplex, corneo-carbo- 

 naceum , apice papillula vel poro instructum, thalamium 

 gelatinosum projiciens, tandem collabens patellulamque saepe 

 corrugatam mentiens. Tab. nostr. 8. f. 4. 



1. Thrombium epigaeum (Sphaeria epigaea Pers. 

 meth. fung. in app. p. 37). Thallus mucoso-gelatinosus , 

 siccus leprosus, pallide luteo-virescens. Apothecia sphaerica, 

 minuta , semiimmersa ; ostiolo pertuso, facile collabente. 

 Wallr. Naturgesch. d. FI. I. 265. Verruc. epigaea Ach! 

 Flk! Schser. spic. 56. 333. Exs. 106. Tab. nostr. 8. f. 4. 

 — In terra argillacea ad cavas sylvarum vias per omn. 

 Europ. 



2. Thrombium veIutinum(Sphaeria velutinaBernh. 

 in Rom, Arch. IV. 11. t. 1. f. 3). Tliallus mucoso- 

 gelatinosus , obscure viridis, tenuis. Apothecia sphaerica, 

 minuta , semiimmersa ; ostiolo papillato. Verrucaria velu- 

 tina Ach. Flk! D. L. 139. — Ad terram sabulosam in 

 sylvis abiegnis Germ. bor. Bernh, Flk! Wallr ; in Tauno 

 Bayrhoffer ! 



3. Thrombium spongiosum (Sphseria spongiosa 

 Bernh. 1. c. p. 11. t. 1. f. 3). Thallus mucoso-gelatinosus, 

 viridis, crassus. Apothecia ampullaeformia , minuta , im- 

 mersa ; ostiolo pertuso , vix supra thallum prominente. — 



