MacMillan: shores at lake of the woods. 997 



Dry morassic shores may be divided into herb bearing, shrub- 

 bearing and tree-»bearing morass as the process of drying is 

 continued. 



I. Herb bearing dry mosses. Of this a number of types 

 should be defined if one wishes to cover the whole ground. 

 At Lake of the Woods the following have been particularly 

 observed: 



a. Cyperus dry morass. The dominant plants are various 



members of the genus Cyperus, Dulichium or Eleo- 

 charis and sometimes of Carex. 



b. Veronica dry morass. The dominant plants are mem- 



bers of the genus Veronica. 



c. Labiate dry morass. The dominant plants are mints 



such as Scutellaria, Mentha, Vleckia and Lycopus. 



d. Plantago dry morass. The dominant plant is Plantago 



major or Plantago rugelii. 



e. Caltha dry morass. The dominant plant is CaltJta 



palustris. 

 Besides these a number of other sub-types might be de- 

 scribed, but those given are certainly the most prominent and 

 may serve as examples. 



II. Shrub-bearing dry morass. Of this there are really but 

 three clearly denned sub-types in the region, so far as my ob- 

 servations have gone: 



a. Salix dry morass. The dominant plants are members 



of the genus Salix. Among them Salix lucida and 

 Salix myrtilloides are conspicuous. 



b. Cornus dry morass. The dominant species are Cornus 



baileyi and Cornus sericea. 



c. Spiraea dry morass. The dominant plant is Spiraea 



salicifolia. 



III. Tree- bearing dry morass. Here again three sharply 

 marked sub-types may be observed. 



a. Larix dry morass. The dominant species is Larix 



laricina, the tamarack. 



b. Picea dry morass. The dominant species is Picea 



mariana, the spruce. 



c. Betula dry morass. The dominant species is Betula 



papyrifera, the birch. 

 As a matter of course none of these dry morass formations 

 always exists in a pure state, but very often mixtures and 

 transitions between one type and another or between dry mo- 

 rass and wet morass types will be established over a given 



