FOSSIL PLANTS. 59 



hides Brong., P. polymorphs (Brong.), Dictyopteris Schutzei 

 Roem., P. Saronms, Catamites striatus (Cotta), C. suckowi 

 Brong., C. Cisti Brong., Annularis stellata (Schloth.), 

 Spkenopkyllum oblongifolium Germ., Stigmaria jicoides 

 Brong., Cordaites principalis (Germ.), Walchia piniformis 

 (Schloth.), several Gymnosperm seeds, etc. In addition to 

 these species, Sterzel describes a number of new forms of 

 ferns and other plants ; in some cases, one cannot help 

 feeling a little doubtful as to how far the institution of 

 new specific terms has been warranted : e.g., Sphenopteris 

 Augusti, S. Deichmitlleri, Callipteris neuropteroides y Psa- 

 ronius Dannenbergii are all founded on very small and 

 fragmentary specimens. In several of the ferns, information 

 is given as to the character of their fertile pinnae, but there 

 is an absence of discussion so far as botanical affinity is con- 

 cerned. Some important facts are recorded with reference 

 to such forms of Calarnites as are included under C. cruci- 

 atus Sterrb. (Eucalamites Weiss). Some figures are given 

 of Calamitean roots in which the vascular cylinder is re- 

 presented by a dark central line : it is suggested that a 

 specimen of Pinnularia capillacea (L. and H.), which occurs 

 on the surface of a Calamines cast, may be the root system 

 of a Calamite, in which nothing is left but an impression of 

 the vascular tissue. A poor specimen of Stigmaria Jicoides 

 is figured, but no trace of Lepidodendron or Sigillaria has 

 been met with. 



From the Middle Rothliegende Pecopteris Geinitzii, P. 

 altonis Gutb., Scolecopteris elegans Zenk., Catamites gigas 

 Brong., and other species are quoted: Zenker's well-known 

 species, with its Marattiaceous fructification, is dealt with at 

 some length. 1 The silicified .fertile pinnules of this fern 

 were originally described by Geinitz as a Myriapod, Palcso- 

 julus dyadicus. Finally there is a useful table of fossils, 

 and a careful comparative account of the Rothliegende and 

 Coal- Measure floras in which stress is laid on the importance 

 of the two characteristic Permian plants Callipteris and 

 Walchia. 



1 Abh. Math, physisch. CI. k. Sachs. Ges. ll'/ss., vol. xix., 1893, p. 124. 



