FERNS OF GLACIER Park 105 
es one to three feet across, which are so dense that there 
does not appear to be space for the growth of a single 
additional frond. These clumps are usually surround- 
ed by dense turf or by bare rock, so that they have al- 
most the appearance of having been carefully planted 
and tended. The leaves always have a fresh, somewhat 
yellowish green color; they have a slight balsamic odor. 
This fern is plentiful at Grinnell Glacier and Sperry Gla- 
cier and above Lake Ellen Wilson. At Sperry Glacier 
it is more abundant than elsewhere. Near Sexton Gla- 
cier only two or three clumps were noticed, and it was 
equally scarce between Morning Eagle Falls and Piegan 
Pass. Near Grinnell Glacier a few plants grew in cliff 
crevices with the maidenhair. The display of this fern 
along the trail above Lake Ellen Wilson was particular- 
ly striking, for here the great clumps were placed among 
loose rocks of deep red argillite, which formed a delight- 
ful contrast with the pale green fronds. 
Asplemum viride Huds. Above timber line at Ice- 
berg Lake and Cracker Lake, in crevices of moist cliffs; 
collected along the Garden Wall at Granite Park by Miss 
Gertrude Norton. In a few places this species occurs 
in some abundance, but it seems to be rare. Our plants 
are rather small. The fronds lie close against the rocks 
and are not at all conspicuous. 
Polystichum Andersoni Hopkins. Rare; found only at 
Grinnell Lake and along the upper trail from Many Gla- 
cier Hotel to Piegan Pass. In both localities it grew, in 
some abundance, in dense moist alder thickets on steep 
hillsides, with the lady fern and male fern. It is a hand- 
Some plant, with its fine vigorous fronds held rather 
stiffly erect. The old withered fronds fall over and per- 
Sist at the base of the plant. This species has been col- 
lected previously only in Washington and British Col- 
umbia. 
Polystichum Lonchitis (L.) Roth. Frequent at mid- 
dle altitudes, and often extending above timber line; 
