IX ASPLENIUM. 
151 
coming confluent, and occasionally occupying nearly the 
whole under surface of every pinnule," from the "base 
to the apex of the frond ; 
they are covered by an 
opaque white oblong indu- 
sium, more rounded on the 
free margin, which is turned 
towards the mid-vein, than 
on that by which it is at- 
tached, the free margin being 
also waved and somewhat 
indented. 
This species agrees in 
structure with Asplenium 
lanceolatum, notwithstand- 
ing the discrepancy of size 
in perfect specimens. Its 
claims to be regarded as a 
native plant have been 
much questioned, and its 
recorded habitats, one of 
which is Amersham Church, 
Bucks, have been searched 
in vain. There are speci- 
mens in the Herbarium of 
the Botanical Society of 
London, from Cavehill, Bel- 
fast, communicated by Mr. Newnham ; and others from 
rocks in Wharncliffe Wood, Yorkshire, said to have been 
collected in 1838, by Mr Redhead. It is now and then 
reported from such suspicious localities as old garden 
walls, and was certainly found, in 1845, growing 
in company with Asplenium Trichomanes, on such 
an old high wall, connected with the mansion of the 
late D. Heigh, Esq., on Tooting Common, Surrey, 
where it could not have been introduced within half 
a century ; but from this station it has since been era- 
[Asplenium fontanum.] 
