162 ■ ARKIV FÖR BOTANIK. BAND S. N:0 4. 



Ad saxa granitica et gneissacea in peninsula Jinretlen et 

 in insula Idlidlja. Fert. 



F. firmior Wain. Thallus sat tenuis, areola to-diffrac- 

 tus, areolis minutis. 



Ad saxa granitica in peninsula Jinretlen. Fert. 



4. V. naeviformis Wain. (n. sp.). 



Thallus crustaceus, laevigatus, fusconigricans, opacus,. 

 tenuissimus, subcontinuus aut dispersus evanescensve. Apo- 

 thecia verrucas elevatas, hemisphaericas, basi sat abruptas, 

 circ. 0,200 — 0,170 millim. latas, thallo concolores, opacas for- 

 mantia, vertice convexo. Perithecium fuligineum, integrum. 

 Nucleus globosus, albidus, jodo violascens. Periphyses con- 

 stipatae, long. O.üiü — 0,015, crass. 0,001 — 0,0015 millim. Para- 

 physes in gelatinam dissolutae, tubulis parcis indicatae. Asci 

 clavati, membrana gelatinosa. Sporae 8:nae, distichae, simpli- 

 ces,decolores,oblongae aut ovoideo-oblongao, apicibus rotunda- 

 tis, long. 0,007 — 0,012, crass. 0,'003— 0,004 millim. Gonidia 

 pleurococcacea, globosa, simplicia aut raro 2-cellulosa, mem- 

 brana sat tenui, diam. circ. 0,008 — 0,010 millim. — V. vitricola 

 Nyl. huic subsimilis, sporis minoribus ellipsoideisque et peri- 

 thecio subdimidiato ab ea differt. V . naeviformis thallo minus 

 evoluto et sporis oblongis a praecedente specie distinguitur et 

 sporis minoribus a V. umbririula var. acrotella (Ach.). 



Ad saxa granitica et gneissacea in peninsula Jinretlen. 

 Fert. 



5. V, subumbrinula Wain. (n. sp.). 



Thallus crustaceus, tenuis vel tenuissimus, subtilissime 

 furfuraceus, niger vel fusco-nigricans, opacus, subcontinuus. 

 Apothecia verrucas elevatas, hemisphaericas, basi sat abruptas, 

 circ. 0,0 millim. latas, thallo concolores, opacas formantia, ver- 

 tice convexo, poro vulgo rotundato, minuto, apicali. Perithe- 

 cium fuscofuligineum, integrum, amphithecio thallino, superne 

 et latere extus fuligineo, gonidia continente, totum ob- 

 ductum. Nucleus globosus, albidus, jodo violascens. Peri- 

 physes abundantes, constipatae, long. 0,012, crass. 0,00ii> 

 millim., simplices. Paraphyses parcae, in gelatinam dissolu- 

 tae. Asci ventricosi, membrana tenui, gelatinosa. Sporae 

 8:nae, distichae, simplices, decolores, ellipsoideae, apicibus ro- 

 tundatis, long. 0,009 — 0,oio, crass. 0.005— 0,007 milhm. Go- 

 nidia flavescentia, globosa, membrana modice incrassata, tan- 

 tum simplicia visa, verisimiliter pleurococcacea. — Thallo 



