ALPINE FLORA AND FERNS OF NORWAY. 303 
Common over the whole Fjeld; form of leaf varies as in 
S. glauca. 
S. myrsinitss, L.; Fl. D. tab. 1,054.—Common. Not found 
quite so high up as the last. Flowers early. Not so variable as 
the last. The leaves of this species found on the Dovre are 
shorter and thicker than in the sub-alpine specimens. 
S. ovata, Seringe.—Rare by Fogsaa above Fogstuen ; plentiful 
in Nystudal. 
S. RnETIcuULATA, L.; Fl. D. tab. 212.—Common up to and 
above the birch-limit. 
S. HERBACEA, L.; Fl. D. tab. 117.—Common from the fir- 
limit up to the permanent snow. 
S. PoLARIS, Wahl.—Rare. First shows itself above the birch- 
limit. Found in small quantities near Jerkin on Gederyggen, on 
Volas6-fjeld ; more plentiful on Blaahoé, Gontsti-fjeld, and Knud- 
shoe. It mounts up to the permanent snow, and appears to 
flourish best above the limit of the larger willows. 
CONIFERA. 
JUNIPERUS comMUNIS, L.; Fl. D. tab. 1,119.—Mounts high 
above the birch-limit ; at its greatest altitude the leaves are very 
short. The whole shrub is frequently covered with a bluish- 
green dew that gives it a remarkable appearance. 
PINUS SYLVESTRIS.—Reaches its highest limit between Dom- 
baas and Fogstuen, and is not met with again before coming to 
Jerkin, where it covers the bottom of the valley in the direction 
of Foldal. 
Pinus Asies.—Is not found on Dovre; but in the neighbour- 
ing heights of Vaage it reaches nearly the same altitude as the 
last. 
ALISMACEA, 
TRIGLOCHIN PALUSTRE, L.; Fl. D. tab. 490.—Common up to 
and a little above the birch-limit. 
POTAMEA. 
PoTAMOGETON PALUSTRIS, L.; Fl. D. tab. 222 (°?)—Found in 
Volaso. 
P. pusiuius, L.; Fl. D. tab. 1,451.—Near Kongsvold, and in 
Volaso. 
P. natans, L.; Fl. D. tab. 1,025.—In Hviddal lakes. 
