THE REMOTE BUCKLER FERN. 
Lastrea remota .— Moore. 
This Fern — the Aspidium rigidum or remotum of 
Brann, makes its first appearance in England in the 
Addenda to Mr. Moore’s “ Nature Printed British 
Ferns ” published in 1863, haying been discovered in 
the neighbourhood of Windermere, by Mr. F. Clowes 
and Mr. Huddart in 1856. It has previously been 
only known as a native of Southern Germany. Braun 
inclines to regard it as a mere divided form of the 
Common Male Fern, but Moore claims for it the rank 
of a species. In general character and aspect it much 
resembles those vigorous examples of L. cristata var. 
spinulosa which are sometimes met with having the 
same narrow elongate erect fronds ; but in its struc¬ 
tural characteristics it differs materially from that 
plant and agrees much more closely with L. Filix-mas t 
From L. Filix-mas, the incised pyramidical-pinnuled 
forms of which most nearly resemble it, it must how¬ 
ever be separated on account of the farther divisions 
of its fronds, which are tripinnate. In Filix-mas also 
the serratures of the lobes are often acute, while in 
remota they often terminate abruptly in a hard short 
point, being what is called mucronate, still oftener 
mucronulate, thus forming the intermediate step be¬ 
tween Filix-mas and Z/. dilatata, which is mucronate 
and spinulose. Mr. Clowes, who has carefully culti- 
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