

The Ohio Naturalist. 



[Vol. VIII, No. 6, 



Fades: Typha latifolia, 



Typha angustifolia, 

 Phragmites phragmites. 

 Principal Species: Hibiscus moscheutos 

 Secondary Species: 



Zizania aquatica, 



Sagittaria latifolia, 



Lemna trisulca, 



Naumbergia thyrsiflora, 



Cornus amomimi, 



Cephalanthus occidentalis, 



CicMta maculata, 



Calawiagrostis canadensis , 



Dianthera americana, 

 SparganiMm eurycarpum, 

 Dulichium artindinaceum, 

 Per sic aria laurina, 

 Cornus obliqua, 

 Carex comosa, 

 Solanum dulcamara, 

 Carex comosa. 



This formation, with the building up of the soil above the 

 water level, may give way immediately to a shrub formation but, 

 where there is a considerable extent of wet soil just above the 

 level of the water, there is more likely to be an invasion and sub- 

 sequent occupation by a wet meadow formation, as follows, — 

 typically exemplified at the eastern border of the marsh to the 

 north west of the Laboratory: 



The Calamagrostis canadensis Wet Meadow Formation. 



Facies: Calamagrostis canadensis 

 Secondary Species: 



Blephariglottis psycodes, 



Boltonia asteroides, 



Carex schweinitzii, 



Carex frankii, 



Carex stipata, 



Carex bicknellii, 



Carex laxifora, 



Cephalanthus occidentalis , 



Cornus obliqua, 



Dryopteris thelypteris, 



Lobelia syphilitica, 



Gyrostachys cernua, 



Penthorum sedoides, 



Roripa hispid a, 



Rumex crispus, 



Rumex obtusifolius, 



Salix amygdaloides, 



Bidens discoid ea. 

 Campanula uliginosa, 

 Carex comosa, 

 Carex lanuginosa, 

 Carex tribuloides, 

 Carex lupulina, 

 Carex vulpinoides, 

 Cornus amomum, 

 Sambucus canadensis , 

 Epilobium adenocatilon, 

 Lathyrus palustris, 

 Mimulus ringens, 

 Onoclea sensibilis, 

 Roripa palustris, 

 Rumex verticillatus , 

 Salix cordata, 

 Salix lucida, etc. 



The list of secondary species in this formation is a very long 

 one, especially when including various invading species from 

 the other formations adjacent, and certain other more or less 

 ruderal species. However, in the real vegetational structure 

 these many species play very little part, the facies constituting 

 almost entirely the bulk of the vegetation. 



