240 FOSSIL VEGETABLES OF TILGATE FOREST. 
Sphenopteris Phillipsii. — Ironstone, Heath- 
field. 
The delicate fern which is represented above, 
is from the ironstone of Pitwood quarry. Heath- 
field, mentioned in p. 227., where j)^^udince, uni- 
ones, and stems, and imperfect remains of large 
ferns occur in abundance. It very much resembles 
Sphenopteris latifolia of the sandstone shale of 
Yorkshire*, figured and described in the excel- 
lent work of Mr. Phillips, to commemorate whose 
valuable services to Geology I have chosen the 
specific name. 
The stems of large ferns distributed throughout 
the ironstone, in the quarry at Pitwood, are most 
remarkable ; in no other part of the Wealden are 
fossil vegetable remains seen in such abundance, 
and yet, with but one exception no traces of the 
foliage remain. The example alluded to is a 
small frond in contact with a branch, which, like 
most other specimens in this locality, is converted 
into hydrate of alumine : and the frond, although 
in juxtaposition with the branch, is yet so 
placed, that the contact may be accidental ; and 
the foliage differs so remarkably from that of all 
known ferns with similar stems, that Mr. Phillips 
and Mr. Stokes, who have examined the specimen, 
think it probable they belong to different genera ; 
as a doubt remains on tlie subject, the specimen 
is not named. In the same quarry I observed 
numerous traces of Lycopodites. 
* Phillips’s Geology of Yorkshire, Plate Vll. fig. 18. 
