68 BERNT LYNGE. M.-N. KL 



Laciniae with ascending margin or entirely ascending to 

 erect. They are short, at their apices widened hke a fan, rounded 

 and coarsely crenate or irregularly, frequently deeply, incise. Laciniae 

 sorediate along th eir whol e mar gin , old laciniae sometimes incurved 

 and therefore apparently covered with soredia; soredia white or yellowish. 

 Thallus greyish-brown, brown or (from the pruina) bluish-violet, laciniae 

 at their apices or entirely covered with a pruina of varying 

 colour: white, pale blue or bluish-violet. Lower side pale or even white 

 at the circumference and on the ascending laciniae, otherwise black. 

 Rhizinae of the same colour as the lower side. 



Apothecia and pycnides not seen. 



This variety is certainly rare in Norway. It is recorded from our 

 northernmost province Finmarken: Osterbotten at the inland end of the 

 Porsanger fjord on mossy rocks near the sea. — These specimens are 

 coarser than those of Norrl. and Nyl. and — owing to the pruina — the 

 colour is more bluish-violet instead of brown; but otherwise there is full 

 conformity. — I also refer some specimens from Leangen in Asker near 

 Kristiania to this variety (on mossy old stones). The laciniae are broader 

 and less ascending (more conformable to Fries Lieh. Suec. No. 204 and to- 

 Claud, et Harm. No. 494), but corticolous specimens often have less 

 ascending laciniae than muscicolous ones. 



The plant of Claudel and Harmand is more delicate than ours^. 

 and the laciniae more panniform. 



10. Physcia, obscura. (Ehrh.) Nyl. 



Lichen obscnrus Ehrhart Plantae cryptogamae (1791) no. 177. 



Lichen orbicularis Hoffmann Enumeratio (1784) p. 68, tab. IX, fig. i 

 et Lichen ciliatns 1. c. p. 69, tab. XIV, fig. i. 



Lichen ulothrix et L. cyclosclis Acharius Prodromus (1798) p. 113. 



Parmelia ulothrix et P. cycloselis u Acharius Lieh. Univ. (1810) 

 p. 481 — 482 (ubi syn.). 



Physcia obsciira a orbicularis et ß ulothrix Th. Fries Lieh. Arct. 

 (i860) p. 65 



Physcia obscura et var. ulothrix Nylander Lieh. Scand. (1861) p. 112. 

 Hue Lieh. Extra-Eur. (1900) suite i, p. 70. 



Physcia obscura a orbicularis Th. Fries Lieh. Scand. I (1871) p. 142. 



