CARBONIFEROUS. 147 



is to be separated from Brongniart's plant, which in turn, as above stated, 

 appears only to represent an inner surface of the stem of Caulopteris peltigera, 

 Brongt., sp. 



Lepidodendron radicans, Lesqx., seems to be referrable to Caulopteris, and 

 perhaps to Caulopteris peltigera. 



Horizon. Coal Measures. 



Locality. British. Northumberland : Newcastle-on-Tyne. 



Caulopteris Cistii, Brongniart, sp. 



Caulopteris Cistii. 



Bronn, Index Palseont. p. 252. 



Feistmantel, Vers. d. Bohm. Kohlenab. p. 146. 



Uber Baumfarrenreste d. Bohm. Steink. p. 13. 



Geinitz, Vers. d. Steinkf. in Sachsen, p. 31, pi. xxxiv. figs. 1, 2. 



Grand 'Eury, Flore Carbon, du Dep. de la Loire, p. 86. 



Lesquereux, Coal Flora of Pennsyl. p. 345. 

 GeoL of Pennsyl. vol. ii. p. 869. 



Sternberg, Vers. ii. p. 172. 



Unger, Synop. Plant. Foss. p. 110. 

 Stemmatopteris Cistii. 



Corda, Flora d. Vorwelt, p. 76. 



Schimper, Traite d. Paleont. Veget. vol. i. p. 710. 



Unger, Genera et Species, p. 196. 

 Sigillaria Cistii. 



Brongniart, Prodrome, p. 64. 



Hist. d. Veget. Foss. p. 418, pi. cxl. fig. 2. 



Remarks. Geinitz refers to transition specimens between this species and 

 Caulopteris macrodiscus, Brongt., sp.*= (Caulopteris peltigera). 

 Horizon. Coal Measures. 

 Locality. British. Somerset : Badstock. 



Rachis of Ferns. 



Noeggerathia tenuistriata. 



Goppert, Foss. Flora d. Ubergangsgebirges, p. 219, pi. xli. fig. 8. 

 Roehl, Foss. Flora d. Steink. Form. Westph. p. 157, pi. xxvi. figs. 1-4. 



Noeggerathia dichotoma. 



Goppert, Foss. Flora d. Ubergangsgebirges, p. 219, pi. xli. figs. 6, 7. 



Remarks. The rachis of fossil ferns have several times been described as 

 Noeggerathia. They are usually longitudinally striated, but the striae are 

 seldom constant in thickness or run continuously for any distance, and in these 

 respects they essentially differ from those of Cordaitcs (Noeggerathia). When 

 the specimens are of a moderate size they invariably give off lateral branches 

 the rachis of the pinnae of the frond and occasionally they bear many 

 small transverse shallow pits ; these are probably the seal's left by fallen 

 scales. 



The large dimensions to which the fronds of some of the Carboniferous 

 Ferns attained is indicated by the size of these specimens. A portion 

 of a large rachis in the Collection measures in its compressed state 4 inches 

 across. The fragment is only 9 inches long, but gives off two secondary 

 branches each fully an inch wide. Another specimen from Carluke has a rachis 

 3 fnches wide. On the impression left in the matrix, where the carbonaceous 

 matter has been removed, are shown the little transversely elongated pits 

 from which the scales have fallen, and which appear to be without any 

 definite order. 



* Vers. d. Steinkf. in Sachsen, p. 31. 



