Rigid Buckler FernRIGID BUCKLER FERN
The Rigid Buckler Fern may be known from those to which it is allied by several characteristics. The fronds are comparatively small, generally broadest at the base, always covered with minute glands, bipinnate; the segments two to five-lobed, not spinulose; the stem always covered with long pointed scales, and, like the Mountain Fern, it has a peculiar fragrance when bruised. The veining is similar to that of the large variety of Nephrodium Filix Mas. The fructification is borne on the lowest anterior branch of each venule. The indusium is conspicuous and persistent.
This seems to be a very local species, being almost exclusively confined to the mountainous limestone districts of the north. of England. It was first discovered as a British fern by the Rev. Mr. Bree, at Ingleborough, and has since been found abundantly in the limestone districts of Yorkshire and Lancashire.
It grows with vigour in common garden soil, requiring no shade, but enjoying moisture. Its culture is similar to that of the other large-growing kinds, the only important points being to secure moisture and good drainage. The introduction of limestone in its bed is suggested by its natural habitat; but this does not seem to be essential to success. It is not one of the most attractive of the ferns, but is valuable in grouping, as forming a contrast with the more ornamental species. The rhizome should not be buried, but the crown left above the surface.