262 THE NATURALIST IN NORWAY. 



P. spinulosum, De Candolle. Is found in Drivdalen 

 as high as the fir-limit. 



P. dilatatiim. Professor Blytt calls this a variety of 

 the preceding. It is found in Drivdalen up to the fir- 

 limit. 



P. rigidum, De Candolle. A very rare fern in this 

 country. 



Aspidium Loncliitis. Found in rocky places up to 

 the birch-limit in the Dovre-fjeld. 



A. angular e. This rare species is to be found near 

 Christiania, Bergen, and Throndjem. The last-men- 

 tioned locality appears to be its limit northwards. 



Asplenium Adiantum-nigrum. Grows in sandy and 

 rocky spots in the south-west of Norway. 



A. Filix-fcemina. Common in moist places in the 

 woods in all parts, even in East Finmark. Grows on 

 the mountains up to the limit of fir. 



A. Trichomanes. Common in sheltered places 

 among rocks up to the southern part of Nordland. 



A. viride. Common in the Dovre-fjeld up to the 

 birch-limit. Is found in the southern parts of Fin- 

 mark. 



A. Rnta-muraria. This diminutive plant grows on 

 old walls, and in the fissures of rocks, near Christiania, 

 Bergen, and near Alten in Finmark. 



A. septentrionale. Is common in all rocky and stony 

 places in this country. Is found in East Finmark, and 

 in the Dovre-fjeld above the birch-limit. 



A. Breynii, Eetz. Scarce. Is not found higher 

 north than Throndjem. I have seen it also on Naesodon, 

 a peninsula running into the fjord near Christiania. 



Pteris aquilina. Found in rocky places as far north 

 as Kordland. 



