FOSSIL COAL PLANTS. 29 



23. S. dentata, (71. sp.) 

 Cuyahoga Falls. 



24. S. minuta, {n. sp.) 

 Cuyahoga Falls. 



25. S. squamosa, (w. sp.) 

 Cuyahoga Falls. 



26. S. ? 



Cuyahoga Falls. 



SYKINGODENDRON — STERNB. 



27. S. pachyderma, Brong., Ilist. Veget. Foss., Tab. 156. 

 Cuyahoga Falls. 



28. S. Americanum, {n. sp.) 

 Cuyahoga Falls. 



29. S. ? 



Cuyahoga Falls. 



LEPIDODENDRON — BTERNB. 



30. L. obovatum, Sternb., Vers. I., Tab. 6. 

 Cuyahoga Falls. 



31. L. elegans, Brong., Hist. Veget. Foss., Vol. IL, Tah. 14. 

 Cuyahoga Falls. 



32. L. gracile, Brong., Hist. Veget. Foss., Vol. II., Tab. 15. 

 Cuyahoga Falls. 



Unger considers these three species as mere varieties of 

 the same plant, (L. obovatum, Sternb.,) but from a careful 

 study of numerous specimens — having, in one instance, an 

 opportunity of examining the trunk, branches, foliage and 

 fruit, all in connection, of one individual — I am convinced 

 that certainly Nos. 30 and 31, and probably 32, are distinct 

 species. 



