269 
aut evanescens. — 
h d b, — Thallus areolatus vel areolato-diffractus vel Pulvereus, 
H Species 4—19. 
1. — Spore 22 aut SNR fuscescentes vel Jusce murali-divise. — Species 4—5. ' 
4. V. umbrina Whinb. pr. Pa FIER 4414, L. S. 
exs. 417, Nyl. Pyrenoc. p. 21. 
k - Thallus fuscescens vel fusconiger sat tenuis opacus laevius- 
 culus vel granuloso-inequalis rimulosus vel fere areolato-rimu- 
losus, late sepissime extensus; apothecia innata (in tuberculis 
- mastoideis vel parum prominulis thalli), perithecio pallido-in- 
Colore; sporae 2 longit. 0,045—55, crassit. 0,018—22 millim. 
FE Ad saxa granitosa locis humidiusculis, vel ad lacus aquasque 
4 1entes libenter nascens, in plurimis Scandinavize partibus obvia. 
quoad specimina suecica ab eo citata thallum obscurum sterilem sper- 
i quoad helvetica Verrucariam viridulam Ach., et quoad 
” Pers. statum silaceum Verrucarizx nigrescentis), res tamen 
subsimiles umbrine nostre, quam absque dubio Acharius huc re- 
Rigrescentem (ad tegulas lateritias in Suecia, ex hb. Ach., eque ac 
ahlenberg sux ”umbrinsa” eandem tegulicolam consociavit). 
vb elopima Whlinb., Ach.; Sagedia clopima Fr. L. E. p. 
(CL. S. exs. 417); V. umbrina var. clopima Nyl. 1. ec. — 
I sit nisi varietas umbrine, thallo olivaceo-fuscescente vel 
taneo-fuscescente vel fusco-nigro, nonnihil crassiore et di- 
ius areolato, areolis fertilibus turgidulis; spor longit. 
'0,032—48, crassit. 0,012—23 millim., gonidia hymenialia ro- 
tundata vel oblonga. — Ad saxa, locis similibus, rarius. 
5. V. subumbrina Nyl. in Öfvers. V. Ak. Förh. 1860, 
Pp: 296. ; 
kb Thallus fusco-cinereus vel cinereo-fuscescens tenuis rimo- 
Us, satis determinatus ; apothecia mediocria mastoideo-pro- 
tila a thallo (vel indumento thallino tenuissimo) plerumque 
eta, ostiolo denudato, perithecio integre nigro; spora 8" 
”M"grescentes ellipsoides, long. 0,046—55, crass. 0,023— 
millim. 
