146 ARKIV FÖR BOTANIK. BAND 8. NIO -1-. 



p. 14. L. inacrocarpa *L. crustulata Th. Fr., Lieh. Scand. II 

 (1874) p. 511; Wain., Adj. Lieh. Lapp. II (1883) p. 73. 



F. Laurentiana (Nyl.) Wain. L. Laurentiana I^yl., FL 

 1885 p. 440, Enum. Lieh. Fret. Behr. (1888) p. 50 (n. 16034 

 in herb. Nyl.). 



Thallus tenuis, areohs dispersis, cinerascentibus aut 

 sordide albidis. Apotheeia adnata, basi leviter eonstrieta, 

 1 — 0,3 millim. lata, diseo piano aut demum eonvexo, atro, 

 nudo, margine sat tenui, atro, nudo, integro, persistente aut 

 demum excluso. Excipulum fusco-fuligineum aut fusco-rube- 

 scens aut fuscescens, KHO non reagens, hyphis irreguJariter 

 contextis. Hypothecium fusco-nigrum, KHO non reagens. 

 Hymenium circ. 0,100 millim. crassum, jodo persistenter 

 caerulescens aut ascis leviter vinose rubentibus. Epithe- 

 cium olivaceo -fuscescens aut aeruginoso-fuligineum, KHO 

 non reagens. Paraphyses parce ramoso-connexae, tubulis 

 tenuibus, gelatinam in KHO turgescentem, abundantem per- 

 currentibus, apice modice incrassatae. Sporae 8:nae, mono- 

 stichae aut distichae, simplices, decolores, subgloboso-ellip- 

 soideae aut subglobosae, apicibus rotundatis, long. 0,009 — 

 0,014, crass. 0,006 — 0,008 millim. 



Ad lapides graniticos prope pagum Pitlekai et in penin- 

 sula Jinretlen. Fert. 



Trib. 13. Aearosporeae. 

 1. Acarospora. 



1. A. molybdina (Wahlenb.) Mass., Symm. Lieh. (1855) 

 p. 21; Th. Fr., Lieh. Aret. (1860) p. 91, Lieh. Spitsb. 

 (1867) p. 19, Lieh. Scand. (1871) p. 209; Almqu., Lieh. laktt. 

 Sib. (1879) p. 35, 36, 43, 48, 49, 51, 56, Lieh. Kust. Beringsm. 

 (1887) p. 541; Deichm. Branth et Groenl., Groenl. Lieh. (1888) 

 p. 477; Wain., Exp. Antarct. Beige Lieh. (1903) p. 34. Leca- 

 nora Tuck., Syn. North Am. Lieh. (1882) p. 200. 



Var. vulgaris (Schaer.) Th. Fr., Lieh. Scand. p. 210. 



Thallus crassus aut sat crassus, saepe late expansus, 

 superne fuscus, opacus, inferne ad ambitum anguste obscu- 

 ratus, ceterum albidus, laciniis convexis, apice 0,6 — 0,3( — 0,6) 

 millim. latis. Apotheeia urceolata, disco impresso, margine 

 bene elevato, simplice. Margo apotheciorum superne late 



