154 
HISTORY OF BRITISH FERNS. 
larger plant is met with, which some botanists regard as a 
mere form of the common species, but which is probably 
distinct. 
Like other wall Ferns, this is often difficult to establish 
in cultivation when first transplanted ; but when once this 
is overcome, its cultivation is not difficult. It is best grown 
in a cold frame, potted rather high, among loam mixed 
with a large proportion of brick rubbish, and not over¬ 
watered. Though generally found in exposed and rather 
sunny situations, the finest examples we have seen were 
found in a shaded, moist situation, under trees, where 
sunshine never visited them. 
Among other names, this plant has borne those of 
Asplenium Geterach, Scolopendrium Ceterack, Grammitis 
Geterach, Notolepeum Geterach, and Gymnogramma Gete- 
rach. 
Genus IX. SCOLOPENDRIUM, or HARTS- 
TONGUE EERN. 
This genus is botanically very distinct from all our 
other native Ferns; and from other points of view is 
