LESSER ADDER'S TONGUE. 
83 
which should be dug up in a good quantity of their 
native soil, and then planted in loamy ground, and 
kept well watered and cool. 
LESSER ADDER’S TONGUE. 
OPHIOGLOSSUM LUSITANICUM. 
(Plate XL Fig. 5.) 
OPHIOGLOSSUM LUSITANICUM is a small variety of 
the former species, not exceeding two or three inches 
in height, the tiny spike arising from its bright green 
leaves in the same manner. It may be recognised by 
its narrower frond and thicker (more fleshy) texture. 
The only British locality in which it has been found 
is the island of Guernsey, although it has long been 
known as a native of the South of Europe. It arrives 
at perfection in January. Its very early fructification 
and minute size suggest the cause of its being long 
overlooked in the spot where it is now found, and 
render it possible that it may also have escaped notice 
in other localities. 
ROYAL OR FLOWERING FERN. 
OSMUND A REG A LIS, 
Linnaeus, and generally adopted. 
(Plate XII.) 
This, the most stately of the British ferns, well de¬ 
serves its name, and is, from its appearance, readily 
