IX] 



EQUISETITES. 



265 



The portion of a leaf-sheath and a diaphragm represented in 

 Hg. 57, B, agrees closely with Zeiller's examples. This specimen 

 is from the English Coal- Measures, but it is not advisable to 



Fig. 58. A. Equisetites spatulatus, Zeill. Leaf-sheath. | nat. size. (After 

 Zeiller.) 



B. E. columnaris, Brongn. From a specimen in the British Museum. 



^ nat. size. 



C. Equisetum ramosissimum, Desf. x 2. 



1). Annularia stellata (Schloth.). Leaf-sheath. Slightly enlarged. 

 (After Potonie.) 



E. Equisetites zeaeformis (Schloth.). Leaf'sheath. | nat. sise. 



(After Potoni6.) 



F. E. lateralis, Phill. From a specimen in the Scarborough Museum. 



Nat. size. 



