1 92 1. No. 7. STUDIES OX THE LICHEN FLORA OF NORWAY. I35 



Common on prepared wood of man}- kinds (old palings, wood-fences, 

 felled trees, and the like). 



Apothecia are not rare at sunny places, they are hardly found in dark 

 forests. I have measured the same spore dimensions as Bitter (Hvpo- 

 gymnia, p. 222 : 6.4—8.5x3.8—5.8 [x) or a little longer, up to 10 [x long. 



2. Parmelia vittata Ach. 



Akcrsh. Kristiania (M. N. Bl.), Åker: Lutvand (Moe), and Ekeberg (H.), 

 Hakedalen (B. L.). Busk. Modum (Moe), Hol (B. L.), Nore (Ki.r,R). 



Tclcm. Tinfos (Kiær). Rog. Sogndalsstranden (H.), Rægefjord (H.). 



Hord. Radøen: Manger-Halland (H.), Osteroen (M. N. Bl.), Eidfjord (H.), 

 Hjølmofossen (H.), Hardangervidda: Maabodalen (H.), Hjolniofossen (H.), and 

 Drolstølgjelæ (H.), \'oss: Graasiden (B. L.). Sngn. Stat (H). 



Hed. Jutulhugget (B. L.), Tonset (B. L.). Op/. Hunder (B. L.), Oien- 

 Klevstad (Th. Fr.), Ringebu (Somrft.), Stulsbroen (B. L. ), Elstad (Zett.), 

 Otta (H.), \'aage: Bruvik (H.), Presteberget (H.), and Graaho (B. L.), Lom: 

 Røisheim (B. L.); \^albykampen (B. L.). 



Sortr. Vaarstien (B. L.). Nordtr. Stjordalen (Somrft.). 



Nordl. Beiarn: Heminghyt (Xor:\i.), Saltdalen (Somrft.). Troiiis. Maals- 

 elven: Maalsnes (B. L.), Bardo: Stromsmo (B. L.). Finiii. Alten: Sakkobani 

 (B. L.), Eibydalen (Norm.), and Store Raipas (B. L.); Porsanger: Rævfosnes 

 (Norm.); Tana: Berlevaag (B. L.), and Langues (B. L.); \'aranger: StorQell 

 pr. Mortensnes (Th. Fr.). 



Panui'lia vittata is a type plant on mossy rocks in subalpine conti- 

 nental tracts. It is common in our eastern valleys in the Bctiila region. 

 It becomes less common in the lowlands, but it descends to the level of 

 the sea. Scarce in Western Norwa}- in inland districts, but common on the 

 coast. — Onlv occacionally found on the stems of Bctiila odorata. 



Its distribution northwards is insufficient!}- known. It has been sought 

 for in \ain in the valleys of Troms fylke, but it is little probable that it 

 should be lacking there. 



Apothecia are very rare in Norway (only recorded from Kristiania 

 (M. N. Blytt and Moe), and Elstad (Zett.). Spermogonia are common (for 

 measures see Bitter: Hypogyniuia, p. 230 — 231). 



The thallus varies considerably as to the colour of the upper side, 

 which is more or less darkened. The var. liypotrvpaiica Nyl. is evidently 

 a little noteworthv varietv. 



