III. VERRUCARIOIDEI. 13. VERRUCARII. 213 



31. Pyrenula pinguis (Cliev. Fl. paris. p. 518.) 

 Thalhts membranaceo-cartilagineus , olivaceus , oleoso- 

 pinguis , contiguus , determinatus. Apothecia ampla vel 

 mediocria , basi solum thalli tuberculis hemisphaerico- 

 conoideis innata ; ostiolo depresso , umbilicato. — Ad 

 arborum corticem laevigatum in Gallia circa Rotomagum 

 Le Prevostl Falaise Prost! circa St. Sever Schaer. 



22» Pyrenula sphaeroides (Verruc. sphaeroides 

 Wallr. crypt. germ. I. p. 300). Thallus membranaceo- 

 cartilagineus, pallide cinerascens, rimuloso-areolatus, effusus. 

 Apothecia mediocria, apice solum ex hemisphaericis thalli 

 tuberculis prominula ; ostiolo papillato , tandem pertuso i. 

 — Ad Alnos grandaevas Thuringiae passim Wallr. — 

 „Ambigit quasi inter Verruc. albam et olivaceam 

 (nitidam), illi cymatiis , huic blastematis ratione similis ; 

 ab utraque tamen diversa , nec cum hujus var. microcy- 

 matia (nitidella) commutanda." Wallr. 1. c. 



23. Pyrenula dermatodes (Borr. in EB. l. Suppl. I. 

 t. 2607. f. 2. opt.). Thallus dermatinus , pallide lutes- 

 cens , contiguus , effusus. Apothecia minutissima , apice 

 solum e thalii tuberculis hemisphaericis prominula \ ostiolo 

 integro. Spic. 347. — In cortice arborum annosarura 

 Hiberniae Miss. Hutschins , Borr l 



Genus XXVII. VERRUCARIA(Wigg.hoIs). Apothecium: 

 excipulum simplex, corneo-carbonaceum, apice papillula vel 

 ostiolo instruclum , Ihalamium gelatinosum servans. Thallus 

 aequabilis. Spic. 53. 332. Tab. nostr. 8. f. 2) 



§. 1. Thallo mucoso-gelatinoso. 



1. Verrucaria chlorotica (Ach. univ. 94). 

 Thallus mucoso-gelalinosus , facile in lepram deliquescens , 

 laete viridis , siccus luteo-virens , contiguus , effusus. 

 Apothecia sphaerica , minuta , basi thallo innata vel sessilia ; 

 ostiolo tandem umbilicato. Exs. 523. — Ad saxa micacea 

 locis umbrosis Helvetiae supra Belp Schaer; Lusat. Mosig; 

 Hercyn. Wallr ; Galliae ad saxa marit. Grandville Delise! 

 inscripta Verruc. maura var. maritima. 



2. Verrucaria macularis (Wallr. crypl. Germ. I. 

 304?). Thallus mucoso-gelatinosus , obscure olivaceo- 



