70 E. A. Vainio, Pyrenocarpeae. 



32. V. sparsiuscula Nyl. 



Fl. 1877 p. 462; Hue Addend. II (1888) p. 280. 



Thallus modice incrassatus aut sat tenuis, areolatus, 

 areolis difformibus, 0.2 — O.15 mm latis aut usque ad 0.4 mm 

 longis, dispersis et partim contiguis, planis aut convexis, 

 cinereo-glaucescentibus, opacis, hypothallo indistincto. Apo- 

 thecia sat crebra aut dispersa, verrucas formantia hemi- 

 sphaericas, O.25 ( — O.2) mm latas, nigricantes, nudas, amphi- 

 thecio thallino haud evoluto. Perithecium depresse sub- 

 globosum, basi thallo immersum aut semiimmersum, parte 

 superiore late rufescens, parte inferiore albidum, latere 

 rotundato, margine ostiolari haud prominente, ostiolo 

 parvo, haud foveolato. Sporae ellipsoideae, long. circ. 

 0.012—0.01:3 mm (,,0.on — O.oie mm" sec. Nyl.), crass. O.007 — 

 O.008 mm. 



Distr. Ad saxa granitica calce obducta in Hiekka Vi- 

 burgi (Vain.). 



Forsan est variatio V. virentis Nyl., apotheciis paullo majori- 

 bus, magis prominentibus, et thallo minus evoluto ab ea differens. 

 Nucleus jodo leviter caerulescens deindeque dilute violascens. 

 Gonidia pleurococcoidea. 



33. V. cinereolurida Vain. (n. sp.). 



Thallus tenuis, continuus aut rimulosus, laevigatus aut 

 leviter inaequalis, lurido-cinerascens vel obscure plumbeus 

 (humidus nigricans), leviter nitidus, inferne haud obscuratus. 

 Apothecia crebra, verrucas formantia hemisphaericas, circ. 

 O.23 — 0.26 mm latas, diu totas strato thallino obductas, basin 

 versus leviter aut parum dilatatas, apice demum anguste 

 aut rarius sat late denudatas nigricantesque vel subdenu- 

 datas et tenuissime thallodice obductas subnigricantesque. 

 Perithecium superne fuligineum, dimidiatum, basi albidum, 

 subhemisphaericum, lateribus haud productis, margine ostio- 

 lari haud aut demum leviter prominente, ostiolo minuto. 

 Sporae ellipsoideae oblongaeve, long. O.017 — 0. 022, crass. O.008— 

 0.01)9 mm. Gonidia pleurococcoidea. 



