38o 



George E. Nichols, 



brackish marsh ordinarily support a rank growth of coarse 

 sedges, notably Scirpus occidentalis, S. campestris paludosus, 

 Carex maritima, and C. salina. These, singly or collectively, may 

 constitute the pioneer association-type. On the higher parts of 

 the marsh the predominant forms usually are Juncus balticus 

 littoralis and Agrostis alba maritima. Other forms which may 

 be more or less abundantly represented in brackish marshes are 

 listed below. 



Figure 46. — Brackish marsh near mouth of Barrasois. 



Triglochin maritima 

 Triglochin palustris 

 'Hierochloe odorata 

 Spartina Michauxiana 

 Eleo charts palustris 

 Scirpus americanus 

 Scirpus rufus. 

 Eleocharis palustris 



Carex Oederi pumila 

 Juncus pelocarpus 

 Atriplex patula hastata 

 Spergularia canadensis 

 Potentilla pacifica 

 Plantago decipiens 

 Solidago sempervirens 

 Aster novi-belgii 



Transitions from salt to brackish, from brackish to fresh 

 swamps, etc. — ^It is impossible to draw a sharp line between 



