Postelsta 29 
wards the forest by a turf building group of 
plants constituting a  gramineous-cy peraceous 
society. It is composed chiefly of the typical 
turf builders, grasses, sedges and rushes, which 
by their rhizomes and roots bind and mat to- 
gether the upper layers of the soil very firmly. 
The soil even down to the underlying rocks 
seems to be of purely organic origin as evinced 
by its color and consistency. It holds a great 
amount of moisture and in many places boggy 
spots and even small pools occur. In such the 
water is generally of a brownish color, due no 
doubt to the presence of a great amount of 
organic matter which is drained directly in from 
the heavy mould of the adjoining forest. The 
following species are generally found in this 
grass-sedge society :— 
Calamagrostis aleutica Juncus efjusus 
Calamagrostis hyperborea Juncus balticus 
Deschampsia caes pitosa Juncus enstjolius 
Trisetum nutkaensis Juncus falcatus alaskensis 
Carex cry ptocar pa Luzula comosa 
Carex flava rectirostrata Tojfieldia intermedia 
Carex sitchensis Glaux maritima 
