88 Proceedings of the Ohio State Academy of Science. 



dago canadensis, Oxalis stricta, Geum canadense, G. vernum, 

 Sambucus canadensis, Onagra biennis, Lycopus americanus. 

 Ambrosia artemisiifolia, A. trifida, Polygonum hartwrightii, P. 

 persicaria, Convolvulus sepium, Plantago rugelii, Veronica peri- 

 grina, Triadenum virginicum, Asclepias incarnata, A. seriaca, 

 Apocynum cannabinum, Echinochloa walteri, Valerianella chen- 

 opodifolia, Nepeta cataria, Viola papilionacea, Galium aparine, 

 Carex davisii, Verbascum blattaria, Rubus occidentalis and Tar- 

 axacum taraxacum. This area extends for about fifty yards 

 from a dense growth of Scirpus fluviatilis, a remnant of the 

 swamp, on the east to a roadway and barnyard on the west. 



The Scirpus fluviatilis society on low, wet land extends from 

 the marginal marsh zone, thru the tree and shrub border well up 

 into the cultivated field. It is a dense growth of the Scirpus 

 overrun with Convolvulus sepium and with numerous Solidago 

 canadensis which toward the higher and drier portion of the 

 area becomes dominant. 



Farther east the island is now connected with the embank- 

 ment of the canal by a dense Typha latifolia society, with a zone 

 of fixed aquatics, Nelumbo lutea and Potamogeton sp. towards 

 the open water and a sedge zone, with Scirpus fluviatilis domi- 

 nant, toward the land. 



South of this the island touches the canal embankment, the 

 former open water between them is a low, wet hollow over- 

 grown with vegetation. The canal embankment bears a meso- 

 phytic tree and shrub society with Ulmus americana, Fraxinus 

 nigra, F. americana and Salix nigra the dominant trees, and 

 Rhus glabra the dominant shrub. At the foot of the embank- 

 ment the ground is low and wet and covered with a jungle of 

 Salix nigra, Ulmus americana, Fraxinus nigra and americana, 

 Gladitsia triacanthos and Platanus occidentalis, with Cornus 

 stolonifera, Rhus glabra the dominant shrubs and Rhus toxico- 

 dendron, Celastrus scandens, Vitis aestivalis climbing over trees 

 and shrubs. The paths are under water in places. The drier 

 portions are covered with sedges, Rynchospora alba, Carex 



