POLYSTTCIIUM ANGULARE. 169 



the pinnae, and of the frond. Pinna} opposite, except near the 

 apex and centre of the frond, where alternate. Near the apex 

 pinnre minute, sometimes wanting, the apex branching about 

 two inches below the tip, each branch brandling again on the 

 superior side into about three branches, and these sub-branches 

 again branching, the basal one dilating into a crest at the apex. 

 As the characters of this Fern are easily describablc, it is 

 unnecessary to give an illustration. Rachis and stipes very 

 scaly; pinnules spinose. For fronds my thanks are due to Mr. 

 R. J. Gray, of Exeter. 





Fig. 147. 



Ix 1)1 VISUM, Wollaston. (Fig. 147.) — Found by Mr. Charles 

 Elworthy, in Somersetshire, and originally named in MSS. 

 Biscrratum, but the plant now will not answer to that cognomen. 

 Frond ovate-lanceolate, with a long stipes. Pinna; lanceolate, 

 the two or three lowest pair refracted. Pinnules coarse, nearly 

 entire, bluntly toothed, simple, undivided, even in the first 

 anterior and posterior ones. I am indebted to Mr. Charles 

 Elworthy, of Xettlecombe, Cornwall, for fronds of this variety. 

 Mr. Padley has forwarded me specimens of a form of this varietv, 

 with pinnules above twice the size, making the frond more 

 crowded and foliaceous. It is a more slender plant. Length 

 twenty-one inches; width seven inches in widest part, (that is, 

 centre of frond,) scarcely narrowed at the base. It is more 

 spiny. The plant appears young, and is likely, in course of 

 time, to be a much finer variety; should this be the case Indi- 

 ■visum major would be an appropriate name, it is, hoAvever, 

 too near the original plant to do more than name provisionally. 



BiSERRATUM-DECOMPOSiTUM, Low€. — A noble-fronded variety, 

 frequently found by Mr. Wollaston near the sea. Scarcely a 

 variety, although a strong-growing form. The fronds above 

 three feet long, and one foot across. Pinnae six or seven 



