316 SPORT IN NORWAY. 
Nesoden, at the foot of Grefsenaas, by Kjaensrudkjern, near 
Stabek. It bears fruit in June and July. 
P. sprnutosum, 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. pizatatum, D.C.; FI. 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. r1ampum, D.C.—Very rare. Found in marshy places on 
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 Norway,” 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 upto East Finmark. It grows in dark, shady, 
and dampish places on the high Fjelds, and attains an altitude of 
3,000 feet. Common near Kongsvold and in Drivdal. Bears 
fruit generally late on in the summer. 
ASPLENIUM CRENATUM, or CYSTOPTERIS CRENATA, F'r.—Occa- 
sional in shady places in Gudbransdal, at altitudes of 600 to 1,000 
feet above the sea, e.g., Kringelen, Eistad on the other side the 
river opposite the Gaard, and by the so-called Storstenuren, 13 
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 
