A)i Ecological Study of Buckeye Lake. 79 



Secondary species : 

 Taller herbs : 



Polygonum acre Erechtites hieracifolia 



Triadenum virginicum Impatiens biflora 



Scutellaria lateriflora Galium trifidum 



Cicuta bulbifera Epilobium strictum 



Solanum dulcamara Boehmeria cylindrica 



Echinochloa walteri Agrimonia sp. 



Homalocenchrus oryzoides Acnida tamariscina 

 Aster paniculatus 



Seedling trees : 



Acer rubrum Ouercus palustris 



Gleditsia triacanthos 



Ground-cover : 



Cyperus strigosus, small mat plants Spirodela polyrhyza 



Riccia fluitans Brachythecium plumosum 



Phialea scutula on dead Hibiscus stems Cladophora sp. 



This zone is 40 feet wide and the ground surface is entirely 

 above water, but so recently exposed that the stranded Spirodela 

 and Algae are still green. The Hibiscus roots form small hillocks 

 on which the Spirodela and Algae become stranded and on which 

 the Riccia is very abundant. The taller herbs form a sparse 

 weak growth due to the density of the Hibiscus which forms a 

 7-foot wall difficult to penetrate. The Typha is confined to the 

 outer portion of the zone and has here obtained optimum condi- 

 tions of growth, the plants are not copious, but are tall, vigorous 

 and fruiting freely. 



n. Swamp-shrub association 

 6. Cornus society 



Principal species : 

 Cornus stolonifera 



