316 SPORT IN NORWAY. 



Na?soen, at the foot of Grefsenaas, by Kjaensrudkjasrn, near 

 Stabaek. It bears fruit in June and July. 



P. SPINULOSUM, D.C. ; Fl. D. tab. 707. Common on dry as 

 well as moist and shady places up to East Finmark. Grows on 

 the mountains up to about 3,500 feet above the sea. Found in 

 Drivdal above the fir-limit. Bears fruit according to the altitude 

 at which it is found. 



P. DDLATATUM, D.C. ; Fl. D. tab. 759. In shady places, in 

 forests and mountains to East Finmark. Its greatest altitude is 

 about 2,000 feet. Bears fruit from June to September, according 

 to the altitude at which it grows. Grows in Drivdal at same 

 height as the last. Professor Blytt remarks, that "the three 

 last-named species are so closely united to each other by inter- 

 mediate forms that it is a matter of difficulty to pronounce them 

 separate species." 



P. RIGIDTJM, D.C. Very rare. Found in marshy places ou 

 mountain forest tracts. Has been found in Sogendal, in Chris- 

 tiansands Stift. Professor Blytt does not seem to think that 

 Hiibner's assertion that " he had noticed it growing in several 

 places in Xorway," worthy of credit. 



CYSTOPTERIS FRAGILIS, Bernh. ; Fl. D. tab. 401. Common in 

 shady places up to East Finmark under different forms. Grows 

 on the mountains to 3,500 feet above the sea. Bears fruit from 

 July to September. 



C. MONTANA, Bernh. ; Fl. D. tab. 2,259. Not uncommon in 

 mountain valleys up to East Finmark. It grows in dark, shady, 

 and dampish places on the high Fjelds, and attains an altitude of 

 3,000 feet. Common near Kongsvdd and in Drivdal. Bears 

 fruit generally late on in the summer. 



ASPLENITJM CRENATUM, Or CYSTOPTERIS CRENATA, Fr. OcCa- 



sional in shady places in Gudbransdal, at altitudes of 600 to 1,000 

 feet above the sea, e.g., Kringelen, Elstad on the other side the 

 river opposite the Gaard, and by the so-called Storstenuren, 1 

 miles south of Vig. Bears fruit late in August. Grows on a 

 substratum of schist. A more detailed description of this ex- 

 tremely rare fern may perhaps be interesting. " Rhizoma about 

 the thickness of the finger, blackish, scaly; fronds 1 to 2 feet 

 high, sometimes half a foot wide, triangular, light green ; frond 

 stalk dark-coloured below, and closely covered with lanceolate 

 scales ; destitute of fronds till half way up, and more or less bent 



