WILSON’S FERN. 
159 
WILSON’S FERN {natural size). 
CySTOPTERIS MONTANA, Link. 
This very elegant and interesting fern has only occurred in 
one British locality, as described below. 
Forfarshire. — Mr. Wilson has kindly handed me the follow- 
ing notice of its discovery. — “ I found this fern on Ben Lawers, 
while botanising in company with Professors Hooker and Gra- 
ham, in August, 1836. I do not think it probable it could have 
been introduced by accident, much less by design. It grows in 
a part where Saxifraga rivularis is or was occasionally found, 
but so rarely that I never saw it but once, when Sir W. J. Hooker 
pointed out a starved and scarcely intelligible plant : the scar- 
