100 BRITISH FERNS ABOUT WARRINGTON. [ApHl, 



Polypodium Dryopteris. On the top of Appleton Dingle, but not 



plentiful. 

 Aspidium lobatum. Banks, etc.. Burton Wood. — The A. acule- 



atum is not really distinct from this species : the more I 



see of them, the more am I convinced that it is nothing 



more than a variety. 

 Aspidium angulare. Bank, Appleton, but not plentiful. 

 Aspidium Oreopteris. Appleton and Penketh ; abundant. 

 Aspidium Thelypteris. Bog near Over. 

 Aspidium Filix-mas. Abundant about Warrington. 

 Aspidium spinulosum. On Woolston Moss a very slender var. of 



this Fern is to be found, very like Cystopteris fragilis ; but of 



course the common variety known as A. dilatatum is very 



common. 

 Asplenium Rut a-inur aria. Wall, Lutchford and Grappenhall 



Bridge ; plentiful. 

 Asplenium TricJiomanes. Wall, Paddington ; not common. 

 Asplenium marinum. Winwick stone-quarry. — This is the var. 



that is so particularly noticed in the ' Nature-printed Ferns.' 



It is peculiar on account of its being so far inland. The 



chief distinction between this and the common form is, this 



has the pinna crenate, and a larger frond. It is more 



common on Overton Hills. 

 Asplenium Adiantwn-nigrum. Winwick ; very common at Frod- 



sham, in walls, etc. 

 Asplenium Filix-foemina. Abundant about Warrington. — The 



form mentioned in the ^British Flora' as A. latifolium, 



grows in Appleton Dingle. 

 Scolopendrium vulgai^e. Common, also the peculiar trifid, bifid, 



and crenate abnormal forms, at Appleton. 

 Pteris aquilina. Abundant. 

 Blechnum boreale. Woolston, Penketh, etc., but not common in 



any locality about Warrington. 



Osmundaceoe. 

 Osmunda regalis. Ditch, Orford, and bank. Burton Wood, and 



on Woolston Moss; plentiful. 



Ophioglossacece. 

 Ophioglossum vulgatum. Plentiful by the river Mersey, at 



Sankey, and Gate Wharf. 



