I92I. No. 7- STUDIES ON THE LICHEN FLORA OF NORWAY. I 83 



In my opinion C. crispa is a proper species, well separated from C. 

 islninUca. 



The structure of the apothecia agrees with that of C. islmidica, but the 

 spores are slightly smaller. I have measured 5.5 — 8.7>^4 — 5 [x. It is often 

 fertile in our country. 



Several formae have been described. The colour varies greatly after 

 the exposure to the sun: Dark cervine at verv sunny stations and paler at 

 shad}' stations. This is a variation entirely parallel to that of the related 

 species, C. islaiidica and C. /lin.^criis. 1 am, therefore, unable to attribute 

 much importance to the pale f. cxpallida Norrl. in Herb. Lieh. Fenn. 107. 

 — In Lieh. Eur. (1831) p. 37 Elias Fries describes his f. sitbtitbiilosa: 

 Mivisione ceterum vulgaris, erecta, parce ramosa, sutura (thalli dehiscentis 

 vestigio) ciliato-spinosa. Haec semper sterilis & ab omni dir. actilrata 

 diversa'. See also Th. Fries Lieh. Scand. p. 98, and Norrl. et Nyl. 

 Herb. Lieh. Fenn. 105 — 106. It is evidently not common in Southern 

 NorwaN-, but a great part of our material from Northern Norway must be 

 referred to f. siibtiibiilosa. 



3. Cetraria hiascens (Fr.) Th. Fr. 



Akcrsli. Aker: Abildsjo (Norm.), and Hakloa (Moe). Busk. Haugastol 

 (B. L.). 



Tclciu. Litjell (Hoch). Austagd Meien (B. L.l. Rog. Sund: Hafsaas (H.). 



Hard. Granvin: Nesheimshorgje (H.), Ulvik: Hervardseggen (Kaal.), 

 Hardangervidda: Graoberg (H.), Haarteignuten. summit (H.), Vivo (H.), and 

 Hjolmofossen (H.); \'oss (H.): Lønehorgje (B. L.), Finse (B. L.l. Sogii. Sun- 

 dalen: Hafsaas (H.). 



Hed. Sander (B. L.), Jutulhugget (B. L.), Tron (B. L.). Upl. Næverfjell 

 (H.l, Tofte (Moe), Rondane (Zett.), Fokstuen (Th. Fr.), Gjeiteryggen (Zett.), 

 Vaagemo (B. L.), Lom: Kjæstad (B. L.), and Roisheim (B. L.). 



Sørtr. Fæmunden: Flenskampen (B. L.), and Sorvika (B. L.); Dovre 

 (Boeck), Knutsho (A. Bl.), Vaarstien (Zett.). Nordtr. Sylene: Nedalen 

 (Nordh.), Snaasen: Leraasmyren (Kaal.). 



Nordl. Saltdalen (Somrft., s. n. C. islaiidica var.), Lofoten (hb. M. N. Bl.). 

 Trojus. Bardo: Innset (B. L.), and Altevand-Dividalen (B. L.), Floitjell (B.L.), 

 Skibotn (B. L.). Fiiiiii. Alten: Bosekop (Zett.), KonsamÇell (Baur), Sakko- 

 bani (Zett.), Skoddavarre (B. L.), Store Raipas (B. L.), Rautasvarre (B. L.), 

 and Bosekop-Karasjok (Baur); Hammerfest (Th. Fr.), Kjelvik (Gunn.), Gjes- 

 vær (H.), Nordkap (II.); Porsanger: Rasibakte (Norm.); Lakseljord: Nordkyn 

 (B. L.), Skjotningberg (B. L.). SJaaholmcn (B. L.), and Veines (Norm.); Tana: 

 Mehavn (H.l, Berlevaag (B. L.l, Langnes (B. L.), Birkestrand (B. L.), Matsjok 

 (Th. Fr.), Polmak (Th. Fr.I, and Rastegaise (Norm.); Varanger: Mortens- 

 nes (Th. Fr.), Vadse (Norm.), Thomasdalen (Norm.), Jarljorden (Th. Fr.), 

 and Fredheim (H.). 



