E. WAINIO, LICHENES PROPE PITLEKAI COLLECTI. 151 



Adj. Lich. Lapp. II (1883) p. 24. Ehexophiale rhcxoblepharu 

 Almqu., Lich. Kiist. Beringsm. (1887) p. 522. 



Thallus tenuis, albidus, aut evanescens. Apothecia basi 

 constricta, margine sat crasso, elevato, radiatim rimoso, atro, 

 nudo, disco primum concavo, dein piano, fusco, leviter nitido, 

 nudo. Perithecium ex hyphis irregulariter contextis, congluti- 

 natis formatum, extus fusco-fuligineum, intus dilute fuscescens, 

 cavitatibus cellularum angustis, membranis sat tenuibus, palli- 

 dis. Hypothecium ex liyphis irregulariter contextis, congluti- 

 natis formatum, superne anguste fusco-nigricans, ceterum di- 

 lute fuscescens. Hymenium circ. 0,100 — 0,110 millim. eras- 

 sum. Epithecium fuscescens, strato tenui gelatinoso, conti- 

 nuo. pallido aut decolore obductum. Paraphyses arete co- 

 haerentes, tubulis tenuibus, septatis, apicibus leviter incrassa- 

 tis fuscisque, membranis infra epithecium gelatinosis, in KHO 

 et H.SO4 modice turgescentibus, passim parce ramoso-con- 

 nexae, maxima parte simplices, apicibus haud ramosis. Asci 

 anguste clavati, membrana tenui aut apice leviter incrassata. 

 Sporae 8:nae, distichae aut subdistichae, decolores, 3-septatae, 

 vulgo fusiformes, rarius oblongae, apicibus obtusis, rarius rotun- 

 datis, halone nullo indutae, long. 0,016 — 0,022, crass. 0,005 — 

 0,006 millim. — Gonidia (in speciminibus lapponicis) chroo- 

 lepoidea, cellulis concatenatis, 0,oir) — 0,020 millim. crassis, 

 membrana crassit. 0,002 — 0,003 millim. 



Sujjra muscos destructos in monte et alibi in peninsula 

 Jinretlen. Fert. 



2. Lecanactis. 



1. L. Dilleniana (Ach.) Koerb., Syst. Germ. (1855) 

 p. 276; Th. Fr., Lich. Arct. (1860) p. 238; Arn., Lich. Tirol 

 XXI (1880) p. 143; Almqu., Lich. Kiist. Beringsm. (1887) 

 p. 525, 539; Deichm. Branth et Groenl., Groenl. Lich. (1888) 

 p. 508. Lecidea Ach., Meth. Lich. (1803) p. 55; Wain., Adj. 

 Lich. Lapp. II (1883) p. 24; Nyl., Enum. Lich. Fret. Behr. 

 (1888) p. 39. L. farinosa *L. Dilleniana Nyl., Lich. Scand. 



(1861) p. 240. Opegrapha Almqu., Skand. Schism. Opegr. 



(1869) p. 11. 



Thallus soraliis rotundatis, convexis, cinereo- vel glauce- 

 scenti-albidis instructus. Gonidia chroolepoidea, cellulis con- 

 catenatis, 0,012 — 0,018 millim. crassis, membranis 0,002-- 



