1 92 1. No. 7. STUDIES ON THE LICHEN FLORA OF NORWAY. 21 3 



It has not yt-t been recorded from the Nordland and the Trondhjeni 

 districts, but this is certainly only due to insufficient exploration. For in 

 S. E. Norway it reappears in the subalpine parts of Osterdalen. It is evi- 

 dently rare in the other great southern yalleys, and in Southern Norway 

 it has never been seen in the lowlands. — In the lowlands of Southern 

 Norway this species is replaced by Alcctoria nidiillfcra. The latter is in 

 our country a southern lowland species, evidently distributed throughout the 

 pine-woods in the whole (?) of Southern Norway. There is only one station 

 in Northern Norway, the gently exposed island of Tromsø. Alcctoria 

 uidiiUfcra was formerly supposed to be rare, but this is certainly not the 

 case. It prefers the iiiaiii s/cnis of Piiiiis silvcstcr. 



I have unhesitatingly treated these two plants as proper species, on 

 account of their remarkable diffei'ence of distribution as well as their diffe- 

 rent habitus: Alcctoria iiidulifcra with numerous, conspicuous whitish sore- 

 dia, crowned with the spines; ^A'c/or/V/ .s/;///)//c/or with much more dispersed 

 and little conspicuous, greyish or greyish-white soredia, and no spines. I 

 have never seen intermediate stages. 



I have never seen the apothecia of A. siinplicior. 



7. Alectoria divergens (Ach.). Nyl. 



Bus/:. Hoi: Odnak (B. L.), Haugastol (B. L.), Jonsknuten (Kler). 



Tc/ciii. Lifjell (Hoch). 



Hard. Gran vin (H.), Hardangervidda: Graoberg (H.), Haarteignuten 

 summit (H.), and Bjordalsnuten (Wille), Voss: Graasiden (M. N. Bl.), Finse 

 (NoRDH.). More. Sundalen: Graahø (H.). 



Hed. Jutulhugget (B. L.), Lille Elvedalen (B. L.), Tron (B. L.), Grontjell 

 (B. L.), Solen (Kindb.). Opl. Næverijell (B. L.), Harbakken (Th. Fr.), Fok- 

 stuen (M. N. Bl.), V'aage and Lom very abundant on the mountains (Zett., 

 B. L.), Hadeland (Moe), Maristuen (Somrft.). 



Sortr. Do vre (M. N. Bl.), Kongsvoll (Boeck), Hogsn^-dda (Th. Fr.), 

 Blaaho (Zett.I, Finsho (Zett.). 



Nordl. Saltdalen (Somrft.). Trains. Bardo: Innset (B. L.), and Alte- 

 vand (B. L.), Lyngen: Helligskogen (B. L.). Finin. Alten: Skoddavarre 

 (Norm.), Store Raipas (Zett.), and Rautasvarre (B.L.); Kautokeino: Lappo- 

 javre (Norm.); Tana: Langnes (B. L.); Varanger: Styrene (Th. Fr.), Jakobs- 

 elven (Norm.). 



Alcctoria divergens is a very frequent lichen on the mountains in 

 Southern Norway above the tree line. It is by far less common in North- 

 ern Norway, and it is rare, if present, on the Arctic coast. There are but 

 a few stations from the subalpine forest region in Eastern Norway. — It 

 seems to be a continental species, at least no stations are as yet known 

 from maritime districts. — 



Always sterile in Norwa}-. 



