100 



THE BOOK OF CHOICE FERNS. 



Llanberis, in Nortti Wales, and at Grordale, in Craven, Yorkshire, where it is 

 found in wooded places, on mountains and on shaded rocks ; in many parts 

 of Scotland, occupying similar situations ; on the mountains of Westmoreland ; 

 on the summit of the Griyder Peaks, on the side overhanging Grlyn Ogwen 

 Lake ; and on the Leek Eoad, about a mile from Buxton. — Nicliolson, 

 Dictionary of Gardening, i., p. 429. Lowe, Our Native Ferns, ii., p. 433. 



C. f. cristata — cris-ta'-ta (crested), Lowe. 



This most interesting form was raised from spores by Mr. Elworthy, of 

 Nettlecombe, near Taunton. Its fronds, about Sin, long, are furnished with 

 leaflets somewhat more distinctly placed than usual, and in the lower portion 

 of the frond conspicuously crested, becoming more or less normal in the upper 

 half ; they branch and are distinctly crested at their summit. — Lowe, Our 

 Native Ferns, ii., p. 432, fig. 851. 



C. f. decurrens — de-cur'-rens (decurrent), Moore. 



A singular form, partaking of characters intermediate between C. f. dentata 

 and C. f. DicMeana, found at Silver Cove, near Wemyss Castle, Fifeshire. 

 Its leaflets, deflexed or turned back, have their pinnules decurrent (running 

 down) and prominently toothed. — Loive, Our Native Ferns, ii., p. 428, fig. 841. 



C. f. dentata — den-ta'-ta (toothed), Hooker. 



Although a form of British origin, the " Toothed Bladder Fern " appears 

 to have been passed entirely unnoticed by the earher botanists ; but about 

 1784 Mr. Dickson found it in clefts of rocks in the Highlands of Scotland. 

 In England it has been gathered between Widdy Bank and Caldron Snout, 

 in Durham ; while in Wales several places boast of its presence, as it has 

 been collected in Denbighshire, on rocks north of Trejorwerth, in Anglesey, 

 on Snowdon, in Flintshire, at Llangollen, and at the foot of the walls of 

 Castle Dinas Bran. Its fronds are narrow, seldom exceeding Gin. in length, 

 and are not of quite so brittle a nature as those of the typical species ; they 

 are bipinnate (twice divided to the midrib), furnished with oblong and bluntly- 

 toothed pinnules (leafits), and borne on slender, smooth and shining stalks 

 of a brownish-purple colour. — Lowe, Our Native Ferns, ii., t. 64. Nicholson, 

 Dictionary of Gardening, i., p. 429. 



