334 CALAMITES. [CH. 



and published illustrations, it may be helpful to quote a few 

 synonyms of the species more particularly dealt with. The 

 exhaustive lists drawn up by Kidston in his Catalogue of 

 Palaeozoic 'plants in the British Museum will be found 

 extremely useful by those concerned with a systematic study 

 of the older plants. 



Fig. 87. Calamocladus equisetiformis (Schloth.). 



From a specimen in the British Museum (McMurtrie Collection, no. v. 

 2963). ca. -| nat. size. 



