ALPINE FLORA AND FERNS OF NORWAY. 311 
Common on Knudsoe, Blaahoe, Fogstuhoe, Nystuhoe, &c. First 
appears above the limit of the larger willows, and mounts up to 
the extreme limit of the Phanerogami. 
P. rLExuosa, Wahlenberg.—Occasional on Goutstifjeld, Blaa- 
hoe, Knudshoe, and Nystuhoe. First appears at about the birch- 
limit, and mounts above the limit of the larger willow tribe. 
Found in company with Salix polaris on Goutstifjeld, and with 
Campanula uniflora on Knudshoe. Professor Blytt is of opinion 
that it is one and the same species with P. arctica found in Mel- 
ville Island by R. Brown. A variety, P. flecuosa B abbreviata, 
is found in plenty on Blaahde, Nystuhde, and Knudshée, always 
above the limit of the larger willows. 
P. exauca, Vahl.; Fl. D. tab. 964—Common on low rocky 
ground over the whole Fjeld. 
P. Batrourt, Parnell.—On the sunny side of the highest part 
z Dovre—e. g., on Blaahde, Nystuhoe, Snehetten, and Knud- 
shoe. 
P. atpina, L.; Fl. D. tab. 807.—Very general over the whole 
Fjeld. Mounts above the birch-limit, but does not grow so high 
up as P, FLExuosA or P. taxa, A variety, 8 vivipara, is found 
on Jerkinshée and near Kongsvold. This plant varies much in 
appearance according to the dryness or fertility of the locality 
where it is found. ‘Thus, in very dry places itassumesa dwarfish 
growth, and has so great a resemblance to P. Jawa B minor, as to 
be readily mistaken for it. 
P. TRIVIALIS, L.; Fl. D. tab. 1,685. Occasional in moist and 
shady places below the birch-limit—e. g., near Kongsvold, and 
many places in Drivdal. 
P, PRATENSIS, L.; FL. D. tab. 1,444. 
B. humilis. The first is found on grassy places, nearly 
y- rigens. always below the birch-limit. 6 on 
6. zantha, - dry places, by road-sides—e. g., near 
e. angustifolia. Jerkin and Kongsvold; y on dampish 
meadows. ‘The variety which Professor Blytt has entered under 
the name of 6. zantha is found high up on the Fjeld, far above 
the birch-limit, on rather damp places; e near Tofte, Jerkin, 
and in Drivdal. The Professor found two other varieties, of 
which the one he thinks may have been a luxuriant form of 
y. rigens. The other bore a great similarity to P. euauca. Vahl. 
P. scroTina, Ehrh.; Fl. D. tab. 2,166. In the lower parts of 
Drivdal and Nystudal, in moist places, Not common. 
