IOS WHERE TO FIND FERNS. 



in Lancashire, in the neighbourhood of Silverdale; in 

 Westmoreland, at Arnside Knot, at Farlton Knot, and 

 at Hutton Roof Crags ; in Yorkshire, at Ingleborough, 

 Ingleton, on the Attermine Rocks, near Settle, at Wharn- 

 side, and White Scars. It has not been recorded as 

 having been found in Wales or in Scotland, and in 

 Ireland only in the county of Louth. It is found growing 

 at various heights up to fifteen hundred feet above the 

 sea-level. 



XXXIV. THE CRESTED BUCKLER FERN. 



Lastrea cristata, 

 (Plate XIV., Fig. i, page 75-) 



LENGTH OF FROND. One to three feet. 



GENERAL DESCRIPTION. Roots abundant, fibrous. 

 Rootstock, a stout caudex, which extends itself laterally in 

 the ground, producing several crowns, which oftentimes, 

 when the plant spreads over an area of several square 

 feet, are still adherent to each other, and show their 

 common origin. Fronds numerous, produced promis- 

 cuously from the crowns without any particular order, 

 such as that noticed in the shuttlecock-shapes of the sets 

 of fronds of several other species of the same genus ; 

 stipes brittle, rather short not exceeding usually one- 

 half the length of the leafy part and having a few light- 

 brown scales scattered upon it ; leafy part, narrowly 

 triangular, or lanceolate, nearly, but not quite, bipinnate ; 

 pinnse opposite or alternate upon the rachis, triangular, 

 pinnatifid, divided, nearly down to their midstems, 

 into oblong, indented pinnules, which are attached to 

 the secondary rachides by the whole width of their 

 bases. The habit of the frond is very erect, and the 



