166 ARKIV FÖR BOTANIK. BAND S. N:0 i. 



vexo. Perithecium fusco-fuligineum, inferne f ulvescens, basi 

 pallidum, globosum. Nucleus globosus, albidus. Periphyses 

 liaud evolutae. Paraphyses numerosissimae, 0,001 — 0,0015 

 millim. crass., gelatinam abundantem percurrentes, neque ra- 

 mosae, nec connexae. Asci oblongo-elongati, membrana tenui. 

 Sporae 8:nae, distichae, decolores, fusiformes, apicibus vulgo 

 sat obtusis, 3-septatae, septis tenuibus, cellulis fere aeque 

 longis, halone nullo indutae, long. 0,0J k —0,022, crass. 0,004 — 

 0,006 millim. 



Ad saxa gneissacea in peninsula Jinretlen. Fert. 



7. Arthopyrenia. 



1. A. humicola Wain. (n. sp.). 



Thallus crustaceus, gelatinosus verniceusve, sat conti- 

 nuus, sat inaequalis, sordide albicans vel cinerascens, sat 

 tenuis, térram humosam et plantas destructas obducens. 

 Gonidia globosa, dilute flavescentia, membrana modice incras- 

 sata, tantum simplicia visa, forsan pleurococcacea. Apo- 

 thecia demum elevata vel semiimmersa, verrucas liemisphae- 

 ricas, basi abruptas, baud constrictas, circ. 0,ifiO — 0,520 

 millim. latas, nigras, nudas, opacas formantia, vertice con- 

 vex©. Perithecium globosum, fusco-fuligineum, integrum, 

 poro rotundato, minuto. Nucleus albidus, jodo leviter cae- 

 rulescens, dein violascens, Periphyses haud evolutae. Para- 

 physes tenues, tubulis gelatinan abundantem percurrentibus, 

 in reticulum ramoso-connexis. Asci ventricoso-clavati, mem- 

 brana sat crassa, gelatinosa. Sporae 8:nae, distichae, deco- 

 lores, oblongae, rectae aut leviter curvatae, apicibus rotun- 

 datis, 1-septatae, septo fere in medio, strato gelatinoso nullo 

 indutae, medio leviter constrictae, long. 0,010—0,015, crass. 



0,001 — 0,00B millim. Habitu omnino similis Thelenellae 



(Microglaenae) reductae (Th. Fr.). 



Ad terram humosam et plantas destructas in peninsula 

 Jinretlen. Fert. 



2. A. punctiformis (Pers.) Arn., Lieh. Frank. Jur. 

 (Fl. 1884) p. 271, Lieh. Fragm. 35 Neufund. (1896) p. 37 

 (haud Mass., Ric. Lieh. Crost., 1852, p. 168). Verrucaria 

 Pers., Ust. Ann. Bot. XI (1794) p. 19; Ach., Lieh. Suec. Prodr. 

 (1798) p. 18; Wain., Adj. Lieh. Lapp. II (1883) p. 192; Almqu., 

 Lieh. Kust. Beringsm. (1887) p. 526, 539; Nyl., Lieh. Paris 



