FOSSIL COAL PLANTS. 31 



which seems to unite this genus with Ulodendron. The 

 casts of tlie medulhxiy cylinders of these plants form part 

 of the genus Artisia. 



ULODENDRON — RHODE. 



TJlodendron and BotJivodendron^ L. & H. 



41. U. majus, Lind. <fe Hutt., Foss. Flor., Tab. 5. 

 Salineville. 



MEGAPHYTUM — ARTIS. 



42. M. dis ere turn, {n. sp.) 

 Cuyahoga Falls. 



Are not the species of Megaphytum merely decorticated 

 trunks of the preceding genus? 



KNORRIA— STERNB. 



43. K. taxina, L. & H., Foss. Fl.or., Tab. 95. 

 Cuyahoga Falls ; with foliage. 



44. K. Hildrethii, {n. sx>.) 



Ficoidites scahrosus., Hild., Aniei'. Jour. Sci.^ Vol. xxxi., 

 p. 31. 



45. K. distans, (n. sp.) 

 Middlebury, Summit county. 



HALONIA — LIND. & HUTT. 



46. H. ? 



Zanesville. 



PSARONIUS — GOTTA. 



47. p. ? 



Found in great abundance in Athens county, 



LEPIDOSTROBUS — BRONG. 



48. L. variablis, L. & H., Fo,ss. Flop-, Tab. 10. 

 Cuyahoga Falls, &c. 



