THE FOSSIL FLORA OF THE SOUTH WALES COAL FIELD. 601 



Description of Specimens from Ebbw Vale, Monmouthshire, in the Collection 

 of the Geological Survey of Great Britain, Jermyn St., London. 



The Collection of the Geological Survey, London, contains four specimens of the 

 Lepidodendron from Ebbw Vale, which I identify as Lepidodendron longifolium, 

 Brongt., and for permission to describe these specimens I am indebted to the kindness 

 of Sir Archibald Geikie. 



Specimen, Registration No. xxiv. ^. 



This example shows a terminal portion of a branch. It is about 15 cm. long, and 

 bears the long, narrow linear foliage of Lepid. longifolium. The stem is about 1 cm. 

 broad, but the form of the leaf scars is not discernible. None of the single nerved 

 leaves show their complete length, but the most perfect portions exhibited are 8 cm. 

 long, and their breadth is rather under 1 mm. At the apex of the stem the leaves 

 are bent more to one side, and form a dense mass of foliage which entirely conceals 

 the underlying matrix. 



Specimen, Registration No. xxiv.fy (fig. 1). 



This specimen also shows the upper portion of a small leafy branch, whose length 

 is about 9' 5 cm., and breadth about 3 mm. The leaf scars are not shown, being entirely 

 enveloped in foliage, which, like that last mentioned, is very long, and extremely narrow. 

 Some of the leaves which appear to be perfect are 4 '5 cm. long, and about 1 mm. broad. 

 The central vein is very thin. 



Specimen, Registration No. xxiv.^ (fig. 2). 



This fossil shows a small branch with a terminal tuft of leaves. Beside it are the 

 remains of another small branch having a similar bunch of terminal leaves. The 

 specimens are otherwise devoid of foliage, but the leaf scars are very small and indistinct. 

 The leaves are about 2*3 cm. long, and about '75 mm. broad. 



Specimen, Registration No. xxiv. yg (fig. 3). 



This example shows two cones, terminating the extremities of a dichotomised branch. 

 The forks of the dichotomy are 2 cm. long, each bearing a fusiform cone 5 '5 cm. long 

 and 1'5 cm. wide at the centre. This fossil is unfortunately not well preserved, but 

 the bracts appear to be lanceolate, and are so arranged that when the light falls on 

 the specimen at right angles to the axis of the cone, that on the right fork shows four 

 longitudinal furrows, while that on the left shows a few oblique furrows. I unite this 

 cone to Lepidodendron longifolium, from the remains of the foliage which are still attached 

 to the stem. The form of this cone is much more truly fusiform than that of the 

 Lepidostrobus variabilis, L. and H. type. 



