FOSSIL FLORA OF THE STAFFORDSHIRE COAL FIELDS. 323 



Lepidodendron, Sternb. 

 Lepidodendron Worthenii, Lesquereux. 



Lepidodendron Worthenii, Lesqx., Coal Flora of Pennsyl., vol. ii. p. 388, pi. lxiv. figs. 8, 9. 

 Lepidodendron Worthenii, Zeiller, Flore foss. du bassin houiller d. Valenciennes, pi. Ixxi. 



Horizon: — At a depth of 440 yards. 



Lepidophyllum, Brongt. 

 Lepidolphyllum lanceolatum, L. and H. 



Lepidophyllum lanceolatum, L. and H., Fossil Flora, vol. i. pi. vii. figs. 3, 4. 

 Horizon: — At the depth of 336 yards, 



Lepidostrobus, Brongt. 

 Lepidostrobus variabilis, L. and H. 



Lepidostrobus variabilis, L. and H., Fossil Flora, vol. i. pis. x. xi. 

 Horizon : — At a depth of 440 yards. 



Lepidostrobus, sp. 



Horizon: — At a depth of 411 yards. 



Sigillaria, Brongt. 

 Sigillaria, sp. 



Horizon : — At a depth of 440 yards. 



Cyperites bicarinata, L. and H. 



Cyperites bicarinata, L. and H., Fossil Flora, vol. i. pi. xliii. figs. 1, 2. 



Remarks. — The grass-like leaves placed under Cyperites bicarinata are the foliage of 

 Sigillaria, and probably also of some species of Lepidodendron. 



These fossils, as far as I have been able to observe, have not two veins as supposed by 

 Lindley and Hutton. The little ledges formed by the two sides of a flat, central, single 

 vein, form protected lodgments for the carbonaceous matter of the leaf, and often after 

 the greater part of this substance has been removed from the other portions of the fossil, 

 the prominence of these two lines of carbonaceous material, which frequently conceal the 

 two edges of the mid- rib, have given rise to the erroneous opinion that the leaves contain 

 two veins. * 



* Lepidophyllum trinerve, L. and H., vol. ii. pi. clii. ; Lepidophyllum binerve, Lebour ; Illustrations of Fossil Plants 

 p. 103, pi. lii., are subject to the same explanation. 



