-16 
Struthiopteris (L.) Hoff, (ostrich fern), Phegopteris poly - 
podioidea Fee (beech fern), Circaoa alpina L. (enchanter's 
nightshade), Solidago latifolia L. (broad-loaved goldenrod), 
Mitella nuda L. (bishop's cap), Stroptopus roseus Itichx. 
(twisted-stalk), Cornua canadensis L. (dwarf cornel), 
> 
Chinaphlla uribellata (L.) Hutt. (pipsiosowa), Pronanthea alba 
L. (rattlesnake-root). Aster paniculatus Lam., Kununculua 
recurvatus Poir. (rough cinquefoil). 
Several species of moss and lichens lend color to 
the general aspect of the forest. One of the most conspicuous 
is Ileokera pennata (L.) Hedw., forming green mats on the sides 
of the trees and ofton extending several meters up. On rotting 
logs in windfalls and along small crooks occur such moss species 
as Brachytheeium salebrosum (Hoffin.) Bryol., Plagiothecium 
turfaceura lindb., Kypnum Crista-Custrensis L., and the lichen 
3ticta pulmonariu (L.) Schaer. 
B. Composition and dynamics of the forest. 
As before indicated, one of the major problems in 
connection with the forest of the north slope, is to account 
for its composition, especially as regards the relation be¬ 
tween the hemlock and maple. As one ascends the slope the 
maple contingent becomes greater and the hemlock less, so that 
finally there appears to be at first sight an almost pure stand 
