Acta Societatis pro Fauna et Flora Fennica, 49, N:o 2. 43 



Asci clavati aut subventricosi. Sporae 8:nae aut abortu pauciores, 

 protoplasmate guttulis oleosis saepe diviso, quare spurie 1 — 2- 

 septatae, at revera simplices. Gelatina hymenialis jodo sat dilute 

 violascens. 



7. V. obnigrescens Nyl. 



Fl. 1875 p. 362; Hue Addend. II (1888) p. 276; Norrl. Symb. Fl. 

 Ladog.-Kar. (1878) p. 32. V. mauriza Nyl. in Brenner Bidr. Hogl. Lafv. 

 (1885) p. 126. 



Thallus tenuis, areolatus, areolis minutis, lat. O.i— O.is 

 (—O.2) mm, contiguis aut partim dispersis, laevigatis, planis, 

 cinerascentibus, opacis, hypothallo tenuissimo nigroque aut 

 indistincto. Apothecia sat crebra aut dispersa, verrucas for- 

 mantia O.2 (— O.25) mm latas, hemisphaericas, parte inferiore 

 amphithecio thallino tenui anguste obductas. Perithecium 

 subglobosum, parte inferiore immersum, fuligineum, in- 

 tegrum, latere haud producto, margine ostiolari haud 

 prominente, ostiolo parvo, saepe demum foveolato. Sporae 

 „ellipsoideae oblongaeve, long. O.016 — O.027, crass. O.007— O.oh 

 mm" (sec. annot. Nyl. in herb. suo). 



Distr. Ad saxa schistosa et diabasica in montibus 

 apertis silvosisque valde rara. Nylandia: Ruokolahdenjar- 

 venmaki („V. nigrescens" sec. determ. Nyl. in Brenner 

 Bidr. Hogl. Lafv. p. 125) et Selkapajanlahti („V. mauriza 11 

 Nyl. in Brenner 1. c. p. 126) Hoglandiae. Karelia Lado- 

 gensis: Variskallio in Kirjavalahti (Norrl.). 



V. aethiobolam var. internigrescentem (Nyl.) et var. ripariarn 

 (Nyl.) in memoriam revocans, sed thallo tenuiore et apotheciis 

 atque areolis thalli minoribus ab iis differens. Cum V. umbrinula 

 Nyl. var. degrediente Vain, jam a Nyl. ipso sec. determ. suas 

 commixta est. „ V. obnigrescens 11 , sec. determ. Nylanderi in Vain. 

 Fl. Tav. Or. p. 120 citata, ad V. aethiobolam pertinet. V. obni- 

 grescens Nyl. Enum. Lich. Fret. Behr. (1888) p. 42 hue non 

 pertinet (sec. herb. Nyl.), planta, p. 72 commemorata, herbario 

 Nyl. deest. Neque planta, ab Hutting in Dalsl. Lafv. (1900) p. 85 

 indicata, a Nyl. rite determinata est. Hypothallus in specim. 



orig. e Variskallio est indistinctus et areolae thalli sunt contiguae, 

 lat. O.i — O.15 mm. 



