CARBONIFEROUS AND PERMO-CARBONIFEROUS ROCKS, N.S.W. 285 



the horizon within the Lower Carboniferous represented 

 by these beds. 



Flora of the Kuttung Series. — From this series the 

 following plants have been recorded: — 



Aster ocalamites radiatus Brong. Rhacopteris septentrionalis Feist. 

 Lepidodendron sp. „ Wilkinsoni (Feist.) 



Cyclostigma sp. Sphenopteris Clarkei Dun. 



Aneimites ovata (McCoy) Cardiopteris sp. 



Rhacopteris intermedia Feist. Rhacophyllum diversiforme Eth. 



„ Roemeri Feist. 



One of the most striking features of this list is the com- 

 plete absence of species of the Neuropteris, Pecopteris and 

 Alethopteris groups, all of which become very abundant in 

 typical Middle and Upper Carboniferous floras in various 

 parts of the world. It is possible that future collecting 

 may bring some of these to light, but in view of the fact 

 that the beds in which the plants occur have been known 

 for many years, and that extensive collections have been 

 made from them, it is not probable that any prominent 

 members of the flora have not been collected. 



Taken as a whole this assemblage of plants is a rather 

 unsatisfactory one on which to base a correlation. When 

 the whole of the material has been carefully revised, it 

 should be possible to draw more reliable conclusions than 

 at present. Some of the species have at various times 

 been referred to Archseopteris, but in the absence of fertile 

 specimens, it is a matter of considerable difficulty to dis- 

 tinguish between Archaeopteris and Rhacopteris. It is 

 therefore wiser for the present to refer all these species to 

 Rhacopteris, and this has been done in the list given above* 



The specimens referred to Asterocalamites ( = Bornia of 

 some authors, and also Archseocalamites Stur.) are chiefly 

 pith casts in which the ridges on adjacent internodes are 

 opposite. Species of this genus occur commonly in rocks 

 of Devonian and Culm age. 



