367 



bus conglomérats conglutinatiscpie contextarum circa Mortensnaes et Naesse- 

 by Finrn. orient.; in lapidibus arcnariis ins. Spitsb. (Nordenskj.) 



Bene distincta species, sed thalli crassitie admodiiin varians; qnum acrusta- 

 cea occurrit, non nisi microscopii usu a Verriicaria rupestri distingui potest. Crusta 

 subdeterminata, saepe sordida. Apolhecia nunc hemisphaerica, nunc truncato-co- 

 nica et interdum centro papiliata; perithecium globosum, extus nigricans; nucleus 

 gelatinosus, roseolus. Asci saccato-clayati; sporae octonae, ellipsoideae, luteo- 

 lae, ? oa,ï — 30 nun. longae et 0,o i :> — 17 mm. latae, blastidiis paucis, inegulariter 

 dispositis, varie angulosis. 



81. Verrucaria Pers. emend. 



Thallus crustaceus, uniformis; apothecia subglobosa, thallo immersa 

 1. plus minus libera, ampbitbecio nigricante, majorem minoremve apotbecii 

 superioris partem tegente, perithecio extus plus minus obscure colorato; 

 paraphyses indistinctae, in gelatinam diffluentes; sporae simplices, ellipsoi- 

 deae 1. oblongae, incoloratae. 



1. V. nigrescens Pers.: crusta subgelatinoso-tartarea, rimuloso-areolata, 

 fusco-nigricante, bypothallo concolori confuso: apotbeciis immersis, subglo- 

 bosis, ostiolo subpapillato protuberantibus, ampbitbecio subdistincto nigri- 

 cante, perithecio nigro. 



Syn. Verrucaria nig?-escens Pers. in Ust. Ann. VII p. 155 et XIV 

 p. 36, Ach. Syn. p. 126, Smrft. Suppl. p. 138. — Pyrenula Schaer. 

 Enum. p. 210. — Lithoicea Mass. Mem. p. 142. 



Verrucaria umbrwa ,':■'. irigrescens Ach. Univ. p. 291. 



Sagedia viridula F r. L. E. p. 414 (p. max. part). 



Lithoicea cott trover >ta Mass. Mem. p. 142. 



Verrucnria fusco-atra Koerb. Syst. p. 341. 



Exs. Schaer. n. 439. 



In rupibus calcareis Nordlandiae passim (Smrft.); in saxis recentioris 

 formationis Finm. orient, parcius (Mortensnaes, Nyborg: ipse). 



Asci subclavati I. metlio inllati; sporae octonae, ovoideae I. oblongae, intus 

 granuloso-gruniosae, luteolae, 0,017 — 22 mm. longae et 0,007—9 mm. latae. — 

 Specimina Finmarkica varus rationibus a forma primaria recedunt. 



2. V. striatula Wnbg. : crusta limitata, virescenti-atra, ex areolis 1. 

 verrucis ambitu dendritice effiguratis radiantibusrpje contexta, hypothallo ni- 

 gro; amphitbeciis crassis, hemisphaericis, circa ostiolum distincte depressis, 

 peritheciis tenuibus, globosis, extus leviter nigricantibus. 



