212 



HKK.NT I.YNGK. M.-X. Kl. 



Apdllicci.i laiissinia. iiiiimi sr)liiiii vidiiiius. Apolhcciuiii laterale, diam. 

 ■2. iimi., (lisens pallidc fiiscescens, leviter convexus, epruinosus, margo crassus, 

 sorediatiis. Receptaciilnin disperse spinulosum. Cortex exterior hyphis 

 distinctis crassis pachydcnnaticis contextus, stipitem versus longitudinalibus, 

 hymenium versus perpendicularihiis, in coiticem interiorem omnino incolo- 

 laliim (iis/iiicif li-<visiciis, cortex interior hyphis suhperpendicularibus vel 

 plectenchymaticis l'orniatus. Hyphae medulläres laxe contextae. Gonidia 

 in tota medulla dispersa, infra corticem interiorem et margine dense glo- 

 merata, stratum crassum continuum occupantia. 1 lypothecium subincolora- 

 tum, crassum, hyphae quam in cf^rticem interiorem minus pachydermaticae. 

 Hymenium angustum, 45-50 \j. altum, Strato incolorato tectum, parte ex- 

 teriore dilute flavo-fuscescens, guttulis inspersum. Paraphyses tenues, apice 

 non inciMssatae, septatae, ramosae, hinc inde anastomosantes. Asci octo- 

 spori, angusti, membrana apice incrassata. Sporae mediocriter limbatae, 

 parvae: 6 — 7>^3 4 1^- 

 React. Thallus KOH ^, KOH + Ca Cl, O, ^, ] ^ 



6. Alectoria simpUcior (Waix.). 



Map X, I. 



Mo/r SIettatjell (H.). 



Hcd. Fæmunden: Sydenden (B. L.), Barkai (B. L.l, Lille Elvedalen 

 (B. L.), Tron (B. L.l, Grottingbratten (B. L.l, Tyldalen (B. L.l, Tonset (B. L.l, 

 Hodalen (B. L.l. Ü/y/. Vaage: Lalm (B. L.). 



Sarfr. Fæmunden: Sorken (B. L.), Sorvika (B. L.l, Flensmarken (B. L.l, 

 and Stenfjellet (B. L.l. 



Troins. Dyro: Gummen (Norm.), Salangen: Valosen (Norm.), Gibostad 

 (B. L.), Maalselven : Moen (B. L.), Elvevoll (B. L.), and Hogskarhus (B. L.); 

 Bardo: Stromsmo (B. L.), and Innset (B. L.l, Tromso (B. L.), Nordreisa: 

 Sappen (B. L.). Fiiini. Alten: Storviksnes (Norm.), Bosekop (B. L.), and 

 Rautasvarre (B. L.); Porsanger: Skoganvarre (Norm.); Jessjavre (Norm.), 

 Karasjok (B. L.), Assebakte (Norm.); Tana: Seiines (Norm.). 



The colour varies: concolorously castaneous or bicolorous: base pale, 

 dark or even black towards the apices. The thallus is more or less den- 

 sely contexted, but it preserves its habitus very well. 



Alcctoria siiiiplicior is abundant and quite the typical Usiicace in our 

 northernmost continental provinces. It prefers the ////;/ t~a'igs of Bctula 

 odoratn and Finns silvcstcr and stands out conspicuously on dead twigs 

 and on Bctula in the spring before the shooting of the leaves. In North- 

 ern Norway it descends to the level of the sea, and it is rather common 

 also on the coast, if Bctula odorata is found. Sometimes also found on 

 prepared wood of Conifers. 



