1921. No. 7. STUDIES ON THE LICHEN FLORA OF NORWAY. 89 



almost wanting and up to 20 mm. — According to Olivier Licli. Eur. I 

 p. 261 plants from Graasiden, Rondanc, and Laurgaard belong to the 

 type (estipitatel, other plants from Rondane to var. stipitata. I have been 

 unable to control this statement. 



Gvropliora hirsiita Ach. Darbishirk Sec. Arct. Exp. Pram, Lichens, 

 p. 24 is G. rugifera (see also Kr3^pt. Vind. 1956 1. 



3. Gyrophora discolor Th. Fr. 

 Map XI. 5. 



Hord. X'idda: Trongeskarnuten (H.I, Kisteskarnuten (11.1, Ravnaberg (11.1, 

 and Fagradal (H.l; Finsehogen (B. L.). More. Romsdal: Alterhoa (H.I, 

 Sundal: Gruvedal (H.l. 



Opl. Gjendebu (Jebe), Bessheim (Jebe). 



Sortr. Dovre (Somrft.), KongsvoU (Th. Fr.I, Knutsho (B. L.I, \'aar- 

 stien (Zett.I, Roros (Vrang). 



Nordl. Saltdalen: Hesjehompene (Nordh.). 



Finiii. Alten: Kaafjord, several stations near the shore (B. L.I; Tana: 

 Risfjorden (B. L.I, and Langues (HøegI. 



This species has a wide distribution in Norway, and it is impossible 

 to call it rare. In Southern Norway it is a high alpine plant, as yet 

 never recorded from the forest zone, in Finmark it descends to the level 

 of the sea. 



The Norwegian specimens which I have seen are entirely negative 

 as to their chemical reaction, they do not give the slightest colour, neither 

 with Ca CI.2 O., alone, nor with Ca Cl., O., + KOH. They should, accordingly, 

 be referred to G. discolor Th. Fr., and not to G. reticulata (Sen aer.), i. e. 

 if the Swiss specimens of Schaerer are realty Ca Cl.^ O.i + red which I 

 have been unable to control. 



Malme Lieh. Suec. 476 {G. discolor from Jamdandl, Krypt. \'ind. 1957 

 [G. reticulata from the Swedish Laplandsl, and An/i Lieh. Ital. 80 (C 

 aiithraciua \ar. reticulata from the Alps I, agree entirely with our plants 

 (CaCLO._, H-, CaCLO., + KOH ^). In have not seen Rabh. Lieh. Eur. 424. 



In Lieh. Ausfl. in Tirol. XMII p. 267 Arnold mentions G. reticulata 

 from Tirol, stating its reaction to be: 'stratus corticalis C. pauUo rubescens'. 



Schaerer refers G. reticulata to G. anthracina {= Iciocarpa), and they 

 are related, though specifically absolutely distinct. G. discolor is paler on 

 the upper side, especially on the greyish-white rugi, and darker (fuliginose) 

 on the lower side, and it is always sterile. G. leiocarpa is irregularly 

 cracked, with convex areolae near the margin, towards the central parts 

 it is coarsely rugose. G. discolor is reticulately rugose also near the 

 margin, and towards the centre die ridges become higher, eacli 'compart- 



