I92I. No. 7. STUDIES OX THE LICHEN FLORA OF NORWAY. IO3 



16. Gyrophora vellea (L.) Ach. 



Akcrsh. Kristiania: Baankjern (MoeI, Drobak (B. L.). ]\'stf. Larvik 

 (M. N.Bl.). Busk. Hoi: Odnak (B. L.l, and Lidtjell (B.L.I. 



Rog. Dalene: Flikeid (JebeI. 



Hard. Granvin: Nesheimshorgen (H.), Hardangervidda (H.), \'oss: Tor- 

 finnsdalen (Lid), and Lonehorgje (B. L.), Finsehegen (B. L.). 



Hcd. Jutulskaret (B. L.), Tron (B. L.). Opl. Ringebu: Sætern (Somrft.), 

 Sell (B. L.), Rondane (Zett.), Snehætta (Linds.), Vistad (Jebe), Vaage: Graa- 

 hø (B. L.), Kvamskleven (M. N. Bl.), Bitihorn (Moe). 



Sort)-. Dovre (Boeck), Kongsvoll (M. N. Bl.), Knutshe (B. L.), \"aarstien 

 (B. L.), Drivstuen (Zett.). 



Nordl. Bodø: \'aagø (Norm.). Saltdalen (Somrft. s. n. Gyrophora vcllca 

 ß. spadocJiroa). Trotus. Lavangen (Norm)., Sorreisa: Østgaard (Norm.), 

 Salangen: Forset (Norm.), Maalselven : MaarQell (B. L.), Moen (Norm.), Bjørn- 

 stad (B. L.), Frihetsli (Norm.), and Likkavarre (B. L.); Bardo: Innset (B. L.), 

 and Altevand (Norm.), Tromsø (Norm.), Balsfjordeidet: Sørfjelltind (Norm.), 

 Lyngen: Lyngseidet (B. L.), Goalsevarre (B. L.); Lulle (B. L.), and Signaldalen 

 (Holmboe); Nordreisa (Norm.). Fitnu. Alten (Wbg.): Oksfjord (NoRM.),Konsam- 

 Ijell (Norm., Zett.), Skoddavarre (Th. Fr.), Bosekop (Zett.), Altagaard (Wbg.) 

 Bjørnstad (Norm.), Store Raipas (B. L.), and Rautasvarre (B. L.), Kautokeino: 

 Lodiken (Norm.); Porsanger: Osterbotn (B. L.), Rævfosnes (Norm.), and Skog- 

 anvarre (Norm.); Karasjokka (Norm.), Anarjokka (Norm.); Tana: GuUholmen 

 (Th. Fr.), Lævajok (B.L.), and Polmak (Th.Fr.); Varanger: Syltefjord (Norm.), 

 Thomasdal (Norm.), Nordre Jakobselv (Norm.), and Elvenes (Th. Fr.). 



A common plant on the Eastern side of Langfjellene in alpine and 

 subalpine positions, especially near the upper forest line. I have seen no 

 specimens from very high elevations, and it only quite exceptionall}' de- 

 scends to the lowlands. In Western Norwa}- it is less common (ace. to 

 Havaas), and as yet only recorded from the highlands. More frequent in 

 Northern than in Southern Norway, and there descending to the level of 

 the sea as a common plant. 



It prefers precipices, large stones and prominent rocks, and is fre- 

 quently associated with Acarospora chlorophana. 



Apothecia are very rare in Southern Norway, but there are several 

 fertile specimens from Northern Norway in our herb. The apothecia have 

 been admirably described by Th. Fries (Lieh. Scand. p. 153, 154). 



It occasionally resembles coarse specimens of Gyrophora hirsuta. The 

 latter is usually smaller and thinner, with its upper side grey or some- 

 times with a tinge of brown, and uiorc or less pulvcndcnt, its lower side 

 paler, with fewer and paler rhizinae. But all of these characters are vari- 

 able. — The rhizinae are occasionally reddish, in that case the spore size 

 will distinguish it from G. crustulosa. 



