Notices of Memoirs — Dr. Arher — Flora of Forest of Dean, etc. 169 



On the Fossil Flora of thk Forest of Dean Coalfield 

 (Gloucestekshiep:), and the Relationships of the Coalfields 

 of the West of England and South Wales. By E. A. Newell 

 Arbee, M.A., Sc.D., F.G.S., University Demonstrator in 

 Palseobotany, Cambridge. 

 Keprinted from Proc. Eoy. See. London, B 579, vol. 84, p. 543, 1912. 



VERY little has been previously recorded of the flora of the Forest 

 of Dean Coalfield, and in the present paper the results of 

 a thorough examination of the flora, and of the vertical distribution 

 of the plants in the three divisions of the productive measures of this 

 coalfield, are discussed. In all forty-four species are described, none 

 of which, however, are new to Britain, though some are rare plants 

 •elsewhere. The list of species is as follows : — 



Eqxjisetales. 

 Calamites varians, Sternb. ; C. ramosus, Artis ; C. siickoivi, Brongn. ; 



C. undulatus (?), Sternb. 

 Calamocladus equisetiformis (Schloth.). 

 Annularia radiata{'>) (Brongn.) ; A. stellata (Schloth.) ; A. galioides (L. and 



H.) ; A. sphenophylloides (Zenker). 

 Calamostachys tuherculata (Sternb.). 

 Macrostachya infimdibuliformis (Brongn.). 



Sphenophyllales . 

 Sphenophyllum emarginatum, Brongn. ; S. majus (Bronn). 



Pteridosperme^ and Filicales. 

 Sphenopteris neuropteroides (Boulay) ; S. {Renaiiltia) chcerophylloides 



(Brongn.). 

 Mar iopter is muricata [Schloth.) ; M. latifolia {?) (Brongn.). 

 Neuropteris sclieuchzeri, Hoffm. ; N. macrophylla, Brongn. ; N. ovata, 



Hoffm. ; N. rarinervis, Bunb. ; N. (Gyclopteris) fimbriata, Lesq. 

 Alethopteris aqioilina (Schloth.) ; A. grandini (Brongn.) ; A. davreuxi 



(Brongn.). 

 Pecopteris miltoni (Artis) ; P. polymorpha, Brongn. ; P. arhorescens (?) 

 (Schloth.); P. (Dactylotheca) pluniosa (Axtis) . 

 SeMINA INCERTiE SEDIS. 

 Trigoyiocarpus noeggerathi (Sternb.). 



Lycopodiales. 



Lepidodendron lanceolatum, Lesq. ; L. aculeatum, Sternb. ; L. wortheni, 



Lesq. ; L. dichotomiim, Sternb. 

 Lepidophloios cf. L. laricinus, Sternb. 

 Lepidophylhim majus, Brongn. ; L. brevifolium, Lesq. 

 Sigillaria Icevigata, Brongn. ; S. elongata, Brongn. ; S. rugosa, Brongn. ; 



S. trigona, Sternb. ; S. tessellata (Sternb.) ; S. brardi, Brongn., var. 



denudata (Goepp.). 



Cordaitales. 

 Cordaites angulosostriatus, Grand'Eury. 



The floras of the three divisions of the productive measures in the 

 Forest of Dean are compared, and it is found that they are practically 

 identical. All three divisions belong to the palfeobotanical horizon 

 known as the Tipper Coal Measures. It is shown that there is a marked 

 agreement between the flora of the Forest of Dean and the Upper Coal 



