I92I. No. 7. STL'DIES OX THE LICHEN FLORA OF ^"OR^\"A^•. 93 



The distribution of this interesting plant in Fenno-Scandia should be 

 investigated. On the whole it is neither western nor maritime. 1 have 

 seen no Swedish specimens, but Norrl. et Nvl. No 90 was collected in 

 Karelia Ladogensis, and the late Mr. Lân'g has sent me one specimen from 

 Lapponia Kemensis. 



It should be noticed that the cited morphological characters for the 

 torrcfacta are not at all connected with the chemical ones. Several — 

 especiallv alpine — specimens agree entirely morphologically with the 

 torrcfacta, but they are absoluteh' Ca Cl., O.iH- and Ca Cl._, O., + KOH^, and 

 they are here referred to the type of G. crosa. 



I have seen no positive reaction of the medulla with KOH, but the 

 cortex often (always?! takes a yellow colour. 



Gyropliora crosa is a very variable species. There are small and 

 miserablv developed specimens If. parvnla Hav aas Lieh. Norw. 330, espe- 

 ciallv in Finmarken and on iiigh mountains) up to plants of 7 — 8 cm. in 

 diam. Such large specimens may be mistaken for G. Iivpcrborca or even 

 for G. arctica. Papillae, trabeculae and fibrillae also \-ary as to their deve- 

 lopment, and the colour of the lower face may ye quite dark. 



6. Gyrophora hyperborea Ach. 



Akcrsh. Holand: Skullerud (B.L.I. Aker everywhere iM. N. Bl.. Moe), 

 Nordmarken: F'vllinga (B.L.I, Bærum: Kolsaas (B. L.l, Asker: \"ardekollen 

 (Klî:r), and MellemkoUen (M. N. Bl.I. Busk. Ringerike: Gyrihaugen IM. N. 

 Bl.), Opkuven (B. L.l, and Tyritjorden (Norm.); Modum: Hovlandsljell (Moe), 

 Hoi: Odnak (B. L.l, Gjeilo: Budalen (B. L.), Hallingskarvet: Prestholskaret 

 (Lerche), and Follaskaret (B. L.); Kongsberg (Poulss.), Jondalen (Somrft.), 

 Jonsknuten (Klïr). 



Tclcm. Bolkesjø (Klt:r), Litjell (Hoch), Gausta (Th. Fr.). Hoidalsmo: 

 Hovdenaasen (Norm.). Austagd. Lyngør (B. L.), Vegusdal: Kvikjon (Sor.), 

 Evje (Sør.I, Bygland: Aardalsnuten (Sør.), Bjørgum (Sør.I. 



Hord. Granvin: Skaalsæte (H.), Hardangervidda: Graoberg (H.), and 

 Haarteignuten, summit (H.l, \'oss: Torfinnsdalen (Lid), and Lønehorgje (B. L.), 

 Finse common (Sam.). Sogn. Myrdal (B. L.), Filetjell (Moe). More. Sun- 

 dalen: Hafsaasen (H.). 



Hed. Rena (Kiær), Jutulskaret (B. L.), Lille Elvedalen (B. L.l, Tron 

 (B. L.); Helgøen (B. L.). Opl. Næverfjell (B. L.), Ringebu (Somrft.), Tofte 

 (Moe). Laurgaard (Lixds.), Fokstuen (Zett.), \'aage and Lom abundant 

 (Zett., B. L.); Toten (Somrft.); Hadeland: Valbykampen (B. L.l. and Brand- 

 bu (B. L.); Land: Lia (B. L.). and Aavella (Norm.); Valders: Kvamskleven 

 (M. N. Bl.), Bessvand (Jebe). 



Sortr. Trondhjem: Ilsviktjellene (Kindt), Dovre (Boeck), Drivstuen 

 (Zett.), Vaarstien (Zett.), Knutsho (Zett.), Kongsvoll (Zett.), Høgsnydda 

 (Zett.), Røros (Hellb. ). 



