52 BERNT LYNGE. M.-N. Kl. 



now made its existence impossible. Also from numerous stations on the 

 south-eastern lowland : Eidsvold (LAUDER LINDSAY), Ringebu (SOMMERFELT), 

 Helgeen, Brandbu, and Minne (LYNGE), Aarnes (Hocn), Sundvolden (HAV- 

 AAS, Modum (MOE), Norderhov (NORMAN), Hersjeen, Aas (LYNGE), Skien 

 (Hocn). It cannot be frequent in the great valleys of central Southern 

 Norway, for it is only recorded from Hoi (Hallingdal, LYNGE). Along the 

 south coast recorded only from Dybvaag (near Lynger, LYNGE), along the west 

 coast here and there on old trees, and also on rocks (Moster, HAVAAS). 

 Rare in Hardanger: Strandebarm (LILLEFOSSE), Eide (HAVAAS), and in 

 Sogn: Hafslo (HAVAAS). At Voss it is found abundantly on deciduous 

 trees in a forest of Picea excelsa, a habitat of several eastern plants, and 

 at Graasiden (LYNGE). Near Trondhjem (Drontheim) at Ilsviken (KINDT) and 

 Sorgenfri (OXAAL and LYNGE). 



I have neither seen the plants from Nordlandia meridionalis nor from 

 Alten, mentioned by TH. FRIES 1 , but I suppose them to belong to van 

 angustata. 



f. turgida, SCHAER. 

 Parmelia pulve rulenta d turgida SCHAERER Enumeratio critica (1850) p. 38. 



Central laciniae turgid, small, papillate or verrucose, peripheral laciniae 

 broad and flat. Thallus without pruina, colour nut-brown or greyish- 

 brown. 



A form not very noteworthy, closely related to var. allochroa. 



Saltdalen (SOMMERFELT, s. n. Parmelia venusta ft. hybrida ACH. and Im- 

 bricaria D: Parmelia aipolia /? cercidia ACH.) Near Kristiania: Tveten 

 (LYNGE). 



var. angustata, (HOFFM.) NYL. 



Lichen angustatus HOFFMANN Enumeratio (1784) p. 77, tab. XI, fig. 2. 



Parmelia pulverulenta var. angustata ACHARIUS. Lich. Univ. (1810) 

 p. 474, Synopsis (1814) p. 214. KOERBER Syst. Lich. Germ. (1855) p. 87. 



Parmelia pulverulenta var. angustata NYLANDER, Synopsis (1858 60) 

 p. 420, Lich. Scand. (1861) p. no. TH. FRIES Lich. Scand. I (1871) p. 

 137. CROMBIE Brit. Lich. (1894) p. 307. HUE Lich. Extra-Eur. (1900) 

 p. 66. OLIVIER Lich. d'Eur. I (1907) p. 236. HARMAND Lich. France 

 (1909) p. 634. 



1 Lich. Scand p. 137. 



