74 
THE RIGID BUCKLER FERN. 
200 and 1,500 feet. In cultivating it, it should be 
borne in mind that it is more impatient than other 
kinds of stagnant moisture, and that it is better for 
the caudex to be a little above the soil, to provide a 
better fall for the decumbent fronds. 
HABITATS. 
Arnside Knott, Hutton Roof Crags, Farleton 
Knott, Silverdale, Whitbarrow, Hampsfell, near 
Grange, &c. 
VARIETIES. 
polyclados , — Farleton Knott, J. M. Barnes. 
interrupta, — Arnside, J. Crossfield. 
abrupta, — Whitbarrow, J. M. Barnes. 
L. RTGIDA. 
