12 EdUISETIIES. 



Class EQUISETALES. 



Genus EQUISETITES, Sternberg. 

 [Flor. Vorwelt, t.-tI. p. 43, 1833.] 



Equisetites Muensteri, Sternberg. 



(PI. I. Fig. 4.) 



1838. Equisetites Muensteri, SternlDerg, Flor. Vorwelt, pi. xvi. figs. 1-5. 

 1850. Equisetum, Brodiei, Buckmau, Quart. Journ. Geol. Soc. vol. vi. p. 414, 



fig. 1. 

 1854. E. Brodiei, Morris, Brit. Foss. p. 8. 

 1867. Equisetites Muensteri, Schenk, Foss. Flor. Grenz. p. 14, pi. ii. 



figs. 3-9 ; pi. iii. 

 1873. E. Muensteri, Saporta, Pal. Fran9. vol. i. p. 232, pis. xxvii.-xxix. 



1891. E. Muensteri, Krasser, Sitzber. k. Akad. "Wiss. AVlen, vol. c. 



Abth. 1, p. 10. 



1892. E. Muensteri, Bartholin, Bot. Tid. Bot. For. Kjobeuhavn, vol. xviii. 



Heft 1, p. 13, pi. v. figs. 1-5. 



1893. E. Brodiei, Woodward, Jurassic Rocks, iii. p. 378. 



1894. Cf. Equisetum pseudo-hoerense, Saporta, Flor. Portugal, pi. i. 



figs. 1-4. 

 Cf. Equisetum Senaulti, Raciborski, Flora Kopalna, p. 231, pi. xxvii. 



figs. 1-14. 

 1896. Equisetum Muensteri, Hartz, Meddelelser om Grouland, xix. p. 223, 



pi. vi. 

 1902. E. Muensteri, MijUer, Bornholms Flor. p. 58, pi. vi. figs. 13-15. 



Aerial shoots cbaracterised by the comparatively small number 

 •of internodal ridges and by the few and short teeth of the 

 leaf-sheaths. Strobilus, as figured by Schenk,' of the normal 

 Equisetaceous type. 



There can be no doubt that this single specimen of an 

 Equisetaceous plant from "Worcestershire should be referred to 

 Equisetites Muensteri, a species characteristic of Rhsetic floras 

 in various parts of the world. Schenk's figures of this type 

 from the Rhaetio of Franconia clearly demonstrate — so far, at 

 least, as external vegetative features are concerned — the identity 

 ■oi the English and German forms. Similarly, as shown by 



> Schenk (67), pi. iii. 



