10 Arber, Fossil Plants from the Ardwick Series. 



tunity of examining, I have not thought it necessary to give 

 the full synonymy. Such a synonymy will be found in most 

 cases in Mr. Kidston's Catalogue of Palaeozoic plants in 

 the British Museum. Only a few of the more important 

 references, and some of those in which the species are 

 figured, are given here. All the specimens described are 

 from the Ardwick series. 



EQUISETALES. 



Calainites Suckow, 1784. 

 Act. Acad. Theod. Palat. Vol. V., p. 355. 

 Calaniites {Encalaniites) ramosus, Art. ? 



{a) Sedgwick* Mus. Camb., Carb. Plant Coll., Nos. 



596, 597, 7Z^, 1 1 24, etc. 

 {b) Manchester Museum, Owens College. 



Calainites ramosus. 



1828. Brongniart, Hist, veget. foss., p. 127, PI. XVII., 



Figs. 5-6. 

 1886. Kidston, Cat. Palceoz. Plants Brit. Mus., p. 26. 

 1886-8. Zeiller, Bassin Jioiiill. de Valenciennes, p. 345, 



PL LV., Fig. 3, PI. LVI., Fig. 3. 



Calamites {Eucalamites) ramosus. 



1884. Weiss, AbJiand. geol. Specialk. von Preuss. 

 Bd. v.. Heft 2, p. 98, PI. II., Fig. 3 ; PL v., 

 Figs. 1-2 ; PL VI.; PL VII., Figs. 1-2 ; PL VIIL, 

 Figs. I, 2, 4 ; PL IX., Figs. 1-2 ; PL x., Fig. i ; 

 PI. XX., Figs. 1-2. 



Williamson records Calamites nodosus, which is now 

 known to be identical with Calamites ramosus, from 

 Ardwick. I think that all the specimens among the 

 Binney Collection should be referred to this species, but 



* See footnote, p. 4. 



