192 I. Xo. 7. STUDIES ON THE LICHEN FLORA OF NORWAY. I49 



Nylander as well as Walmo aic of opinion that P. iitiiiiiscula should 

 be treated as a proper species. I am unable to subscribe to this opinion, 

 on the reason that I mean to have seen intermediate stages. Such stages 

 are quite as frequent as the type on the high mountains and in Northern 

 Norway. They are especially found at very exposed places, as prominent 

 rocks and rounded tops where the snow is swept away by the mountain 

 gales. I consider the uiliiiisciila to be a reduced arctic and high alpine 

 form. 



The whole material of 'Paniirlia lanata , collected by Simmons during 

 the 2nd Norwegian Exped. in the Fram, and determined by Darbishire, is 

 P. iniiiiiscula. 



lå. Parmelia stenophylla (Ach.) Du Rietz. 

 syn. Paniiclia coiispcrsa (Ehrh.) Ach. p. p. 



Øst/. Hvaler (B. L.), Fredriksstad: Græsvik (B. L.), Hobol (B. L.), 

 Sletter (B. L.), Ovenoen (B. L.), Jeloen (B. L.). Akcrsli. Ryenvarde (Kiær), 

 Teien (Moe), Hovind (M. N. Bl.), Hovedoen (H.), Kristiania (N. Lund). Bæ- 

 rum: Snaroen (B. L.), and Kalvøen (Kiær), Asker (Kiær), Minne (B. L.). 

 J'rsf/. Aasgaardsstrand (Jebe), Nottero (B. L.), Yasser: Sandoen (B. L.), Tjol- 

 ling (Hoeg), Malmoen (B. L.), Larvik (Norm.), Stavern (Norm.). B/i,sk. Hol : 

 Neraal (B. L.), and Lidtjtll (B. L.). 



Teleni. Rjukan (B. L.), Rollag (Kiær). Aitstagd. Lyngor very common 

 (B. L.), Tromøen (Jebe). ■ 



Hord. Moster (H.), Siggen (H.), Mogster (B. L.), Fløien (Friele), Eide 

 (H.), Granvin (H.). Sogii. Stat (H.). More. Romsdal (Linds.). 



He(L Veldre (Nordh.), Helgoen (B. L.). Opl. Gudbrandsdalen (Norm.), 

 Oier (Th. Fr.), Listad: Ovrebygden (Kiær), Otta (IL), \'aagemo (B. L.), 

 Lom (SoMRFT.): Ulstad (B. L.); Valdres (M. N. Bl.). 



Sortr. Trondhjem: Ladehammern (Kindt). 



Fiiiiii. Kaafiord (M. N. Bl.). 



Paniir/ia stciiopliy/la is very abundant in the lowlands along our south 

 and west coast, especially in the strand region. North of Trondhjem it 

 must be rare, onh' one specimen from Kaaljord in Alten (M. N. Blytt), 

 perhaps a mistaken label? 



In southern inland provinces it is common in the corn-growing districts 

 and, — though rarely — it ascends the tree line. It has not been recorded 

 higher than 875 m. s. m., in Opdal. In Hardanger it ascends to 300 m., 

 according to Havaas. In the inland provinces it is especially found at the 

 strands of the lakes, at way-sides, on the heaps of stones cleared out of 

 the ground before cultivation, and the like. This clearly indicates a nitro- 

 philous tendency. 



