260 THE NATURALIST IN NOKWAY. 



sionally met with in Drivdalen, but is by no means so 

 common in the Dovre-fjeld as the preceding. 



P. Dryopteris. Found in shady spots from Christi- 

 ania up to Throndjem. Barely seen in Finmark. In 

 the Dovre-fjeld up to, and sometimes above the birch- 

 limit. 



P. Robertianwn. Grows in rocky limestone soils 

 from Christiania as far north as Throndjem, but no 

 farther north. 



P. Rhceticum. Common in all mountain regions, 

 from the extreme south to the far north. It is found 

 upwards of 4000 feet above the level of the sea. 



Woodsia Ilvensis. Grows in the mountain regions 

 from Christiansand up to East Finmark. Although 

 scattered over the whole country, it is by no means 

 common, and is generally found in the moist crevices 

 in rocks. Professor Blytt says that it grows in the 

 fir region in Drivdalen. 



W. hyperborea. Much the same as the last, but is 

 rather more common. 



Lycopodium clavatum. Found in the region of fir 

 in the Dovre-fjeld, and in mountain morasses in Fin- 

 mark. It is said that the Lapps adorn their children's 

 heads with chaplets made from this species, and that 

 the spikes of the plants, projecting on all sides, remind 

 those singular little people of fairies. 



L. annotinum. This rare fern is found in many of 

 the Norwegian pine-forests. Found in woods in Driv- 

 dalen. A variety, L. alpestre, Hartmann, is found all 

 over the Dovre-fjeld, up to the willow-limit. 



L. Selago. Common in the Dovre-fjeld, up to the 

 perpetual snow. It is supposed to possess medicinal 

 virtues, and being a powerful irritant, it is used in 



