198 



POLYSTICHUM ACULEATUM. 



Sori circular and indusiate, eventually confluent. Indusiura 

 membranaceous. 



This species is not so proliferous in varieties as Polystichum 

 angulare. The following may be described: — 



Fig. 157. — Middle pinnae, and basal pinnte. 



LoBATUM, Deakin, (Fig. 157.) — Having narrow lance-shaped 

 frondsj from twelve to twenty-four inches in length, sub- 

 pinnate, as only a few of the basal pinnae have pinnules. 

 The anterior basal pinnule is much larger, and the auricle 

 larger; the remainder decurrent or confluent, and not auricled. 

 A common variety, found in many places in Yorkshire, by 

 Mr. A. Clapham, of Scarborough; at Chaigeley Manor, near 

 Clitheroe, Morecombe Bay, and at Preston, Lancashire, by 

 myself; at Matlock, in Derbyshire, and also at Cromford, .by 

 myself; at Paplewick, Bulwell, WoUaston, Beeston, and 

 Stanton-on-the-Wolds, by myself; in the lake district near 

 Ambleside, Patterdale, and Coniston, by myself; in Warwick- 

 shire, by the Hev. W. Bree; in Gloucestershire, by Mr. H. 

 Buckley; in Shropshire, by the Revs. W. M. Hind and W. 

 A. Leighton; near Yarmouth, in Norfolk, by Miss Wells; at 

 St. Mary's Cray, Kent, by Mr. R. Sim; at Norwood, Middle- 

 sex, by Mr. S. F. Gray; at Mayford, in Surrey, by Mr. Thomas 

 Moore, of Chelsea; in Devonshire, by the Rev. F. Mules; at 

 Nettlecombe, by Mr. Charles Elworthy. Other authorities have 

 found it in Somersetshire, Hampshire, Isle of Wight, Sussex, 

 Buckinghamshire, Berkshire, Oxfordshire, Essex, Suflfolk, 



