l82 YORKSHIRE NATURALISTS' UNION. 



1617. Athyrium Filix-foemina. Lady fern. Damp woods, 

 not uncommon. 



1620. Scolopendrium vulgare. Hart's-tongue. Rocksand 

 old walls. Hackfall ; Fountains ; very abundant on 

 the cliffs near Gormire ; Knaresborough (Baines). 



1623. Cystopteris fragilis. Bladder-fern. Old walls and 

 limestone rocks, rare. Near Cayton Gill (I do not 

 feel myself called upon to be more definite, as people 

 are apt to be so selfishly rapacious with regard to ferns, 

 and my information might be made an ill use of) ; 

 near the dropping well at Knaresborough (Baines). 



1627. Aspidium aculeatum. Prickly shield fern. Damp 

 woods, not common. Studley (whence Baines also 

 records it) ; Hackfall. The variety b. lobatum occurs 

 in copses near Masham. 



1629. Nephrodium Filix-mas. Male fern. Woods and 

 banks, common. 



1631. N. cristatum. Crested shield fern. Plumpton Rocks, 

 Knaresborough (Baines). 



1633. N. spinulosum. Prickly-toothed shield fern. Marshy 



woods, rare. Abundant at Leckby Carr ; scarce at 

 Hackfall. 



1634. N. dilatatum. Broad prickly-toothed shield fern. 



Damp woods, common. 



1635. N. aemulum. Recurved prickly-toothed shield fern. 



Shady rocks. In small quantity at Hackfall ; also 

 recorded by Mr. Lees (1. c). 



1636. N. Thelypteris. Marsh fern. Wet muddy bogs, 



growing in greatest luxuriance when its rhizome is 

 under water the greater part of the year ; local, and 

 very rare. In 'abundance at Sharow mires ; Baines 

 records it from Copgrove (where it may easily be 

 extinct, owing to drainage) ; Mr. Lees records it from 

 the Newby district (1. c). 



1637. N. oreopteris. Mountain shield fern. Heaths and 



Trans. Y.N. U., 1SS3 (pub. 1884). Series E 



