VERTEBRA RIA. 



93 



in the lower portion of the leaf, but dissolving into fine veins 

 towards the apex. Lateral nervation acute, arched. Meshes wide, 

 oblong-polygonal. 



Feistrnantel has suggested that this almost circular frond may- 

 be only an immature stage of some other species. It is known 

 from two localities in the Raniganj group of the Damuda 

 division of India. The same author l has, however, described, under 

 the name G. spathulato-cordata, some very similar fronds from the 

 Newcastle Series of New South Wales, and from Tasmania. So far 



Fig. 25. — Glossopieris orbicularis, Feist. After Feistrnantel. Slightly reduced. 



as one can judge from a comparison of his figures, the latter 

 specimens, although smaller, have a similar nervation, and may 

 eventually prove to be identical. 



Not represented in the British Museum collection. 



THE 11HIZOME OF GLOSSQPTERIS. 



Genus VERTEBRARIA, Royle, 1833. 

 [Illust. Bot. Himal. Mounts., p. xxix*.] 

 Elongate, flattened, cylindrical casts, simple or branched, often 

 bearing root-like organs. 



In specimens preserved more or less perpendicular to the bedding- 



1 Feistrnantel (90), p. 128, pi. xx, figs. 5, 7, 8. 



