HALONIA. 



87 



At page 96 he gives the following classification : 

 " Lycopodiacees. 



Lepidodenclrees. 



Lepidodendron. 



Lepidostrobus. 



Lepidophylliim. 



Ulodendron. 



Megaphyton. 



Halonia. 



Lepidophloios. 



Knorria." 



§ 7. GoLDENBERG, in writing on Lepidodendron, appears to consider that Halonia is 

 a genus allied to that plant, if not even a species of the same genus.-^ 



VIII. Genus Halonia. 



"Lepidodendron. — The stem of these plants is cylindrical; and on the bark of well- 

 preserved specimens the points of attachment of the leaves may be seen, which resemble 

 in all points those of Lepidodendron. But in addition to these the stem also bears 

 conical protuberances, arranged quincuncially, which are evenly covered by the bark with 

 its leaf-scars, so that it seems as if these protuberances were due to branches not yet 

 come through. 



" If the form and dimensions of the parts where the leaves were attached suggest that 

 some species of Lepidodendron is represented by Halonia, it is still more confirmed 

 by our often having met with specimens of Halonia exhibiting the same ramification as 

 Lepidodendron. 



" The specimen represented and described by us shows that the protuberances 

 appeared on the outer branches only, there being no traces of such swelhngs below the 

 bifurcation ; and, lastly, in favour of this view is the fact that all the stems of Halonia 

 have a proportionally small circumference. 



" 39. Halonia dicJiofuma, pi. iii, fig. 12. 



" This three-inch stem is branched dichotoniously, and bears spirally arranged 

 papillae on each arm of the bifurcation, whereas the stem never bears these growths below 

 the bifurcation. 



" The bark is covered with rhomboidal leaf-scars, resembling in shape and arrangement 

 the leaf-attachments of Lepidodendron. 



' ' Flora Saraepontana fossilis,' part i, p. 20, 185.5. For this translation I am indebted to the kind- 

 ness of my friend, Mr. Charles Bailey, the indefatigable Librarian of the Literary and Philosophical Society 

 of Manchester. 



13 



