I92I. No. 7- -STUDIES 0\ THE LICHEN FLORA OF NORWAY. 229 



In the lowland forest of South Eastern Norway this species is rather 

 common or in places frequent. On the west coast also on rocks. Other- 

 wise I am unable to give much information about its distribution in Norway. 



Apothecia are very rare. 



Zinc chloriodide isolates the hyphae of the axis of this species as well 

 as those of C '. barhata. 



3. Usnea florida (L.i Hoffm. 



Map MI, I. 



J^'esf/. Holmestrand (M. N. Bl. I, Larvik: Paulervand optima INorm.), 

 Jordfalden (Norm. I, Hedrum (HøegI, Aaklungen (Høeg). 



Tclcin. -Solem: Holtankilen (Hoch I. Austagd. Arendal (hb. M. N. Bl.L 



L'sNca florida has a -xery restricted distribution in Norway: recorded 

 from a few stations on the S. E. coast, in the Fagiis zone as correctly stated 

 by several authors. All other stations in literature for this plant in Nor- 

 way are based on U. sorcdiifcra. 



At Larvik rather common on Fagiis, on the stems and often high up 

 on the branches; also on Bctiila and on Picea (Høeg). 



4. Usnea sorediifera Arn. 



0s(f. Fredriksstad: Græsvik (B.L.I, Larkollen (B. L.I, Jeloen (B. L.). 

 Akcrs/i. Ski (B.L.I, Kristiania: Malmoen (MoeI, Nordmarken ubique (B. L.), 

 Asker: Skogumsaasen (B. L.I, Minne: Feiringveien (B. L.I. J<'s(f. TjoUing 

 et Larvik ubique (Norm., B. L., HoegI. Busk. Modum (Moe), Snarum: Ram- 

 fosmoen (B. L.I, Kongsberg (Kiær I, Hol: Hols vand (B. L.I, Eker (Deinb.I» 

 Skjonne (Kiær I. 



Tr/nii. Brevik (B.L.I, Bolkesjo (Kiær). Aiistagd. Lx-ngor: Nautholmen 

 (B. L.I. J'cstagd. Kristianssand : Ravnedalen (B. L.), Mandai: Risobank 

 (B.L.I. 



Hord. Stord (Norm.): Sagenes c. fr. (H.), Os (B. L.), Mosnuken (B. L.), 

 Strandebarm: Groning (Lillef.), Granvin (H.), X'^oss pluribi (B. L.), Manger 

 (H.l, Lygrefjorden (H.l. 



Hid. Matrand (B. L.I, Soler: Haslemo (B. L.I, Hanestad pluribi (B. L.), 

 Tonset pluribi (B. L.I; Helgoen (B. L.). Opl. Lillehammer (Hensch.I, Mesna- 

 fossen c. fr. (B.L.I, Næverljell (H.l, Ringebu (Somrft. s. n. Usnea plicata), 

 Hedalen c. fr. (JebeI, X'instra (JebfI, Lalm (B. L.l; Hadeland pluribi: Gran 

 (JebeI, Valbykampen, Ragnhildrud, Rodhaugen, Tingelstad et \'elmunden 

 (B. L.l; Land: Lia (B. L.l. 



Sort)-. Hitra (Norm.). Xordtr. Stjørdalen (Somrft.). 



