138 IU:rNT LYNGE, M.-N. Kl. 



Apolliccin nrc xcry rare, 1 ha\'c iK.-ver soen them in NVjrwa}' (fJcscri- 

 1)((1 hy 1)Itii;r, IIaumand (IjcIi. de l*"i-ancc p. 504), and My\GNX'.sso.\ I.e.). 



Paniic/id fariiiacca prctcrs tlie cortex of Pimts silvestc}-, it is only 

 occasionally found on Picea cxcclsa and on old wood-fences, Mag.nusso.n 

 (1. c.) also I'oiind it on Pctiila, yllinis, Jiiiiipcnis, and on rocks. — It is a 

 heliophilous plant, e\id(iitly preferring Piiiits on account of the rich supply 

 of air and light. 1 lia\c never seen it on a Picra with intact branches, 

 but a large Picra growing in an open position and destitute of branches 

 at a great part of its stem was there literally covered with it. 



5. Parmelia obsciirata Acn. 



Paiiiic/ia uhsciirata Ac 11. Syn. p. 218 in hb. Ach. in Helsingfors. 



Syn. Pa ni id ia obscnrasceus Bitter. 



Hard. Irongeskarnuten (H.). More. .Siindalen: Gruvedalen (H.). 

 Hcd. Jutulhugget (B. L.). O//. Lom: Ulstad (B. L.), and Kjæstad (B.L.), 

 Torpen: Sulna (B. L.). 



Sortr. Dovre: \'aarstien (Kiær), Knutsho (B. L.), Kongsvoll (Hult and 



NORRLIX). 



Trams. Bardo: hinset (B. L.), Lyngen: Lulle (B. L.). 



f. glaiica Bitter, recorded only from Dovre: Knutsho (950 m. s. m.). 



Bitter referred it to P. fariiiacca on account of its diffuse soredia. 

 This species has a rich development of soredia, usuallv covering the whole 

 central part of the thallus, P. obsciirata has less developed soredia, some- 

 times only a fatiscent rugose upper side, rarely more confluent low soredia. 

 P. fariiiacca is pale greyish, P. obsciirata ±_ dark brown, this colour some- 

 times spreads over the whole thallus. 



The habitus of P. obsciirata approaches more to P. Bittcri, but this 

 species has capitate 'soralia'. The soralia are usually small and little deve- 

 loped (0.3 — I mm.), or rarely greater and confluent (2 — 3 mm.). 



Bitter writes: P. fariiiacca besitzt keine Linien oder Flecken auf der 

 Oberfläche ihrer Randlappen, wohl aber die var. obscurasceus. I have seen 

 distinct dark spots on the thallus of P. fariiiacca. 



Not rare in eastern subalpine and lower alpine regions on mossy rocks 

 and on old stems of Bctiila odorata. Rare in Western Norway (Havaas). 



6. Parmelia Bitten nom. nov. 

 Syn. Pariiiclia obsciirata Bitter. 



Busk. Hoi: Hogehaug (B. L.), and Odnak (B. L.). 



Hcd. jutulhugget (B. L.), Tonset: Havern (B. L.), and Tyldalen (B. L.). 

 Opl. Ringebu (hb. Somrft.), Lom: Kjæstad (B. L.), Fluberg: Lia (B. L.). 

 Sortr. Dovre: \'aarstien (B. L.), and Knutsho (B. L.). 

 Fiiiiii. Porsanger (hb. Norm.). 



