158 
IX. ASn.KXU-M. 
A 
tmd narrowed form of the frond, the pinnne, and the pin- 
nules. They are, however, closely connected by inter- 
mediate states. The most distinct is acutum, which is a 
remarkably ele- 
gant plant. The v 
former is not un- .> V 
common in dry ex- 
posed places. The 
latter is chiefly 
found in Ireland, 
and in the western 
counties of Eng- 
land, and seems 
rare. The variety 
named varieya- 
tum, differs only 
in its being, as its 
name implies, dis- 
tinctly variegated, 
with yellowish 
white. It was 
found in 1847, 
on Shottisbrook 
church, Berkshire, 
by Mr. Silver. 
This species is 
very common 
throughout Eng- 
land and Europe, 
flourishing under 
hedge-rows, in the crevices of rocks, and on the decay- 
ing walls of ruined buildings. 
The Black Spleenwort once had a reputed efficacy in 
the treatment of coughs, asthmas, and similar affections 
of the chest ; but it has not maintained its reputation. 
It is a very accommodating and ornamental species for 
the cultivator, growing well under pot-culture, or planted 
[Asplenium Adiantmn nigrum vars.] 
