The Present Position of Palaeozoic Botany. 



197 



Stiir long ago (1877) described a form of fructification, under the 

 name Cahjmmatotheca Stangen, belonging- to a Sphenopteris, of Lower 

 Carboniferous age, closely allied to S. Höninghausi {= Lijginodendron 

 öldhamium). An investigation of the original specimens (see Fig. 30) 



Fig. 28. Diagram of the seed of Lycjinoäenäron in median longitudinal section, 

 c, cupule; v.h., vascular bundles of pedicel, cupule, and integument; cp, canopy, 

 forming upper part of integument; pc, annular pollen-chamber; cc, central column 

 of pollen-chamber; a. p.c., aperture of pollen-chamber. A, B, 0, D, planes of the 

 transverse sections in Fig. 29. After Oliver. 



has convinced me both of the correctness of the attribution and of 

 the accuracy ofStur's description of the fructification. The stellate 

 bodies borne on the naked, branched rachis, are undoubtedly lobed 

 indusia or cupules, as Stur believed, and not groups of sporangia as 

 others have maintained. There is little doubt that they are of the 



