1921. No. 7- STUDIES ON THE LICHEX ELOKA OF NORWAY. lOI 



J dilutissime, sed persistenter caerulescens. Cortex infrahypothecialis parte 

 inferiore fusco-rubescens, cortices praeterea J flavo-fuscescens. 



Cetraria ciicttllata and C. nivalis are nearly related species, though 

 quite distinct. It will be seen from the above description of the apothecia 

 that this relationship is also expressed in their internal structure. 



10. Cetraria nivalis (L.) Ach. 

 Map XII, 3. 



Østf. Hvaler: Asmaloen (Nordh.), Sletter (B. L.). Akcrsh. Aker: Hoved- 

 øen (Moe), Lindøen (Moe), St. Hanshaugen (Moe), and Abildso (Norm.); 

 Bærum: Snaroen (B. L.), and Kolsaas (II.). Vest/. Yasser: Sandøen (B. L.), 

 Tjomo (B. L.). Busk. Gyrihaugen (B. L.), Hensmoen (B. L.), Modum: Hov- 

 landsljell (Moe), Hoi: Odnak (B. L.), Haugastol (B. L.), Nore: Hallandsfjell 

 (Kiær). 



Tclcui. Lifjell (Kiær), Bolkesjo (Kiær), Gausta (Th. Fr.). Austagd. 

 Tronioen (B. L.), Meien (B. L.). 



Hord. Skaanevik: Møsegrønut (Holmboe), Tysnessaata (H.), Fusa: Grøn- 

 linutane (Lillef.), Granvin (H.), Hardangervidda: Fagerlid (H.), Graoberg 

 (H.), Helnaberg (H.), and Haarteignuten, summit (H.), Voss: Torfinnsdalen 

 (Lid), Finse (B. L.). Sogu. Vettismork (H.). 7¥o;r. Romsdalen: Slcttafjell 

 (H.), Sundalen: Hofsaas (H.). 



Hed. Matrand (B. L.), Solor (B. L.), Elverum (B. L.), Jutulhugget (B. L.), 

 Lille Elvedalen (B. L.), Tron (B. L.), Solen (Kindb.), Tonset: Grønfjell (B. L.), 

 and Tyldalen (B. L.), Hodalen: Vanghø (B. L.). Opl. Hunder (B. L.), Ringebu 

 (Somret.), Dovre (Boeck, Somrft.), Jerkin (Boeck), Vaage and Lom very 

 abundant (Norm., H., B. L.), Snehætta (Linds.). 



Sørtr. Graakallen (Kindt), Vaarstien (B. L.), Knutsho (Th. Fr.), Kongs- 

 voll (M. N. Bl.), Hogsnydda (Th. Fr.), Roros: Stenfjellet (B. L.), Langen 

 (B. L.). 



Nord/. Saltdalen (Somrft.), Andenes (Norm.). Tro/ns. Gibostad (B. L.), 

 Bardo: Innset (B. L.), Tromsø (Norm.), Tromsdalen (B. L.), Lygseidet (B. L.). 

 Fiimi. Alten (Moe): Bosekop (Th. Fr.), and Rautasvarre (B. L.); Kautokeino 

 (Wbg.); Gjesvær (H.), Nordkap (H.); Porsanger: Skoganvarre (Norm.); 

 Karasjok (B. L.); Laksefjorden: Nordkyn (B. L.), and Lebesby (B. L.); Tana: 

 Berlevaag (B. L.), Risfjorden (B. L.), Kongsøen (Høeg), Vesterbugt (B. L.), 

 Algasvarre (Norm.), and Raistegaise (Dahl); Varanger: Klubben (Th. Fr.), 

 Elvenes (Th. Fr.), Jakobselven (Norm.), and Fredheim (H.). 



There are few other lichens covering so vast areas in our countrv as 

 Cetraria nivalis. It is most abundant at dry places on all our mountains. 

 In Northern Norway it is common at all ele\ations, in Southern Norway 

 it is rare in the forest zone, but quite common on the south coast on shore 

 sands, e. g. at the Kristiania tjord. 



