602 



THE BOOK OF CHOICE FERNS. 



N. d. Stansfieldii— Stans-field'-i-i (Stansfield's), Moore. 



This remarkably pretty form, of dwarf dimensions, was originally found 

 in Cheshire. Its fronds, Sin. to lOin. long and 4in. to oin. broad, are 

 somewhat triangular in shape, and furnished with strap-shaped, blunt leaflets 

 and leafits of a totally distinct character, being conspicuously crisped or 

 recurved, of a thick, leathery texture, and so abundantly glandular as 

 to give almost a horny appearance to the frond. — Lowe^ Our Native Ferns, 

 i., fig. 269. 



N. d. tanacetifolium— tan-ac-e'-tif-oF-i-um (Tansy-leaved), Moore. 



This common yet very pretty variety, found in Devonshire, Kent, Surrey, 

 Derbyshire, Yorkshire, and other parts of England, is, or at least formerly 

 was, abundant in various places between Ciitheroe and Preston, and Clitheroe 

 and Lancaster. Its large, broadly- triangular fronds are tripinnate (three 

 times divided to the midrib). The robust stalks are abundantly furnished 

 with entire, spear-shaped scales of a dark brown colour, and marked with 



a darker bar down their centre. — 

 Lowe, Our Native Ferns, i., p. 293 ; 

 Ferns British and Exotic, vi., p. 79. 



N. (Lastrea) diplazioides— Las'- 



tre-a ; dip-laz-i-o-i'-des (Dip- 



lazium-like), Hoolter. 



A greenhouse species, of robust 



habit, native of Columbia, producing 



fronds 2ft. to oft. long, sometimes 1ft. 



broad, and borne on tufted stalks 6in. 



^, ^. ,. or more long, densely clothed with 



Fii. 122. Nephrodium dissectum ° 



(much reduced). narrow scales of a dark brown colour. 



The leaflets, of a soft, papery texture, 

 and furnished with a gland at the base beneath, are 4in. to 6in. long, lin. 

 to IJin. broad, and cut down to a broadly- winged stalk into nearly entire, 

 broad lobes, reaching less than half-way down to the midrib, close to which 

 the sori (spore masses), covered by a small, spiny involucre, are disposed. — 

 Hooker, Species Filiciim, iv., p. 99. 



