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



8. Umbilicaria Uîoffm.) Fw. 



1. Umbilicaria pustiilata (L.) Hoffm. 

 Map V, I. 



0sf/. Prestebakke: Glenne (B. L.), Fredrikssten (B. L.l, Fredriksstad: 

 Græsvik (B. L.), Tomter (B. L.), Ovenoen (B. L.). Akersh. Drobak (B.L.I, 

 Kristiania (Moe, and others), Aker: Lutvand (Moe), Bærum: Kolsaas (Kler). 

 Vest/. Tonsberg: Foyenland (B. L.), Nottero (B. L.), Yasser (B. L.), Ula(B. L.), 

 Larvik: Malmoen (B. L.l, Svenør (Nor^l), Tjolling (Norm.), F'redriksvern 

 (Norm). Busk. Hoi: Lidfjell (B. L.). 



Tclcm. Jomfruland (M. N. Bl.). Austagd. Lynger (B. L.), Tromøen: 

 Haave (B. L.), Bygland: Aardalsnuten (Sør.), Tyvenesset (Sør.), and Bjør- 

 gum SøR.). Vcstf. Kristianssand (Linds.), Vaagsbygden (B. L.l, Hægeland 

 (SoR.), Søgne: Hollen (Sør.), Mandal: Risøbank (B. L.), and Skjernøen 

 (B. L.). Rog. Sogndalsstranden (H.). 



Hord. Fitjar (Lid), Moster (H.), Etne (Somrft.), Anuglen (B. L.), Mog- 

 ster (B. L.), Store Kalsø (B. L.), Fusa: Strandvik (Lillef.), Granvin: Eide 

 (H.), and Nesheimshorgen (H.), Bergen (Somrft.), Askøen (Friele?), Manger: 

 S3'dvaagnes (H.), L3-grefjorden (B. L.l. Sogn. Filefjell (Moe), Lyster: Sol- 

 vorn (JebeI, Floro (Norm. I, Statlandet: Selje (H.). Møre. Geiranger: Merok (H.l. 



Op/. 'Gudbrandsdalen' (Norm.), Laurgaard (Norm.), Vaage: Kvamskle- 

 ven (M. N. Bl.), Sjodalsvand (Jebe), Gjendin (Jebe), Bitihorn (M. N. Bl.). 



Very abundant on maritime rocks on the south coast, and frequent 

 though not so abundant, on the west coast. In Eastern Norway it is rare 

 in inland lowland districts, but recorded from several subalpine stations, 

 and from rocks and prominent stones (nitrophilous species?) about the upper 

 forest line. Recorded from subalpine stations in Western Norway 15 — 

 900 or 1000 m. s. m.l. According to Havaas (in lit.) it rarely descends 

 to the level of the sea at the inland end of our great western fjords. Found 

 at Eide at the sea level, then lacking (in Granvin) to ca. 500 m. s. m., 

 recorded from 5 — 900 m. s. m. 



Subalpine plants are usually smaller than plants from the south coast. 



Like many species of this family it has a tendency to form perforate 

 thalli. If the perforations are large and numerous, the whole thallus be- 

 comes 'fenestrate' {L fciicstmta Havaas). Such thalli are occasionally seen, 

 with the type. 



Apothecia are quite common on the south coast. 



