FILICES. 391 



Mr. Watson, on receiving a specimen from District ii. some years ago, 

 wrote of it as " one of those intermediate forms which defy separation 

 between aculeatum and lohatum" In the case of other local examples 

 I have found it impossible to assign them severally to either with any 

 confidence, and consequently have combined variety and type. 



This species is more one of exposed elevated spots than is A. angulare^ 

 though it is by no means confined to such places. 



858. A. angulare, Willd. Angular-lohed Shield- Fern. 



Native ; on hedge-banks, especially in shady spots ; in woods and 

 other bushy places. Common. June to September. 

 c. I. Sheviock. Between Burraton and Notter Bridge, St. Stephens. 

 Antony. 

 II. Saltash. Carkeel. Landulph. 

 p. III. Pennycross, in plenty. Tamerton Foliot. Beer Ferrers. Sparingly 

 in one or two places between Horrabridge and Tavistock. 

 IV. One of the frequent ferns in lanes near Plymouth. Radford. 



Egg Buckland, in plenty. Plympton. Newnham. 

 V. Wembury. Newton Ferrers. Brixton. Between Ridg^vay and 



Ivybridge. 

 VI. Pamflete. Holbeton. Kingston. 



In certain neighbourhoods this is very abundant, whilst in others, 

 especially in the colder parts of the area, it is altogether absent, or but 

 sparsely met with. In the lanes near Plymouth it is unfortunately much 

 reduced in quantity through the roots being dug up for sale or to plant 

 in gardens. 



So late in the spring as the first week in May I have seen fronds of 

 this fern, together "with those of Nephr odium Filix-mas and PteriSj 

 much injured by frost. 



NEPHRODIUM, Eich. 



859. N. Filix-mas, Presl. Male Fern. 



Native ; on hedge-banks, in woods, bushy and rocky places. Very 

 common. June, July. Area general. 

 One of the commonest ferns. The handsome and striking variety 

 Borreri, Newm., is very general, occurring in plenty in all the Districts, 

 and extending to Dartmoor. It occurs associated with ordmary Filix- 

 mas, so that its noticeable tint and other peculiarities seem in no way 

 dependent on soil or situation. I am not sufficiently familiar with the 

 marks of var. affine to speak of its distribution apart from that of the 

 type form. 



860. N. spinulosum, Desv. Narrow Prickly-toothed Fern. 



Native ; in bogs and swampy places in woods and copses. Rare 

 and local. June to August. 



