280 
Thallus albo-pulvereus tenuis vel tenuissimus sat determi- 
natus (vel subeffusus); apothecia minuta (circa latit. 0,2 
millim.) prominula, perithecio dimidiatim nigro (basi plerum- 
que nonnihil intus inflexa); spor& nigrescentes ellipsoidex vel 
fusiformi-ellipsoidee 3—5-septate, longit. 0,016—32, crassit, 
0,007—0,011 millim. (interdum altero apice attenuato')- | 
Ad corticem” quercus, populi, tilie, ulmi et Salicis pentandre 
in Scandinavia, septentrionem versus in Suecia usque ad Up-- 
saliam et saltem in Finlandia meridionali atque usque in Wa- 
lamo rarius.. É 
C. — Spore 8"2 incolores (exceptione infuscate) oblonge vel ellipsoidee 1-se 
ptate (exceptione 3-septate), in unica specie (32) attenuate (fusiformes). rå 
latina hymenea iodo haud tincta. Thallus plurimis hypophleodes vel evanesce By 
una species (31) sazicola. — Species 27—32. SM 
27. V. gemmata Ach., Fr. L. E. p. 444, Nyl. Pyrenoc. 
3. 3 
Thallus albus vel albicans tenuissimus indeterminatus; ap 
thecia majuscula hemispherice prominula (latit. circa 0.5—0,7 
millim.), perithecio dimidiatim nigro; thece cylindracex, spore 
ellipsoidexe 1-septate, longit. 0,020—28 (usque 0,034), er 
0,010—12 millim., paraphyses graciles confertee. Er 
Ad cortices (presertim fraxini vetustioris) in Scandinavia mar 
gis meridionali, et adhuc in Alandia (Edwin Nylander). 
+ V. eonoidea Fr. L. E. p. 432, Nyl. Pyrenoc. p. 93:— 
Thallus obsoletus vel macula cinerascente vel dilute rosea im 
dicatus; apothecia ut in gemmata; sporwe paullo minor 
(long. 0,014—21, crass. 0,008—0,010 millim.). — Ad saxa 
carea recentioris formationis, presertim in Gottlandia. Vix CO 
sideranda sit nisi ut status saxicola (caleicola) gemmate. Al 
thecia sepe basi nonnihil incavata. 
28. VW. epidermidis Ach., Whinb., Fr. L. E. p. 447, Nf: 
Pyrenoc. p. 58; Verrucaria analepta Ach. É 
Thallus vix ullus; apothecia mediocria vel minora, P 
thecio dimidiatim nigro; spor& oblonge vel ovoideo-oblonga 
