FOSSIL PLANTS. 455 



It is remarkable that Prof. Geinitz, in his Coal Flora ( Vers- 

 teinerungen) of Saxony, describes under the name of Lepidos- 

 trobus variabilis, a species nearly related to our Lepidostrobus 

 princeps, and considers it as a cone of Lepidodendron rimosum. 

 Lepidostrobus princeps could be thus considered as a cone of 

 Lepidodendron simplex. But at Colchester, where the specimen 

 of Lepidodendron was found, there are no remains of Lepidos- 

 trobus; and this last species is in plenty at Duquoin, where no 

 specimen of Lepidodendron was found. It is well to remark, 

 nevertheless, that both Duquoin and Colchester coal banks are 

 placed at the same geological horizon. Coal No. 3. 



A number of specimens of other species of Lepidodendron, 

 some apparently new, are preserved in the State Cabinet at 

 Springfield, mostly from Pope county, but most of them are too 

 much broken and obliterated for determination. Among the 

 species already known, there is in the cabinet the following : 



Lepidodendron clypeatum, Lsqx. Geol. Report Penn., p. 875, 

 tab. 15, fig. 5, and tab. 16, fig. 7. Locality: Kock Island 

 county. 



Lepidodendron obovatum, Sternb. Vers., 1, p. 10, tab. 6, fig. 

 1. Locality: Same as last. 



Lepidodendron Veltheimianam, Sternb. Vers., 1-4, p. 12, 

 tab. 52, fig. 2. Carroll's place, Pope county; Chester group. 



One specimen from the same place is referable with doubt to 

 Lepidodendron gracile, Brgt., and another to Lepidodendron ele- 

 gans, Brgt. 



Genus Lepidostrobus, Brgt. Cones or catkins of species of 

 Lepidodendron, formed by winged sporanges perpendicularly 

 attached all around a common axis, with the wings or blades 

 (Lepidophyllum) upraised and imbricated. 



Lepidostrobus princeps, Sp. nov. Tab. 45, fig. 1 to 4. Cone 

 large, cylindrical, about one foot long, or more ; blades sagit- 

 tate at the base, lanceolate, taper-pointed, marked with a broad 



