POLYSTICHVM AXGULAKE. 



165 





Fig. 143. 



L.vxciFOLTUM. (Fig. 143.) — A long, narrow, lance-shapod 

 frond, twelve inches in length, and three inches wide. Pinna> 

 slightly irregular in length, linear-lanceolate; apex obtuse,, 

 distant below. Pinnules briefly stalked, ovate, scarcely auriclcd, 

 entire, acutely serrated, opposite or sub-opposite, approximate; 

 the superior basal pinnule largest. Soriferous only at the apex 

 of the frond. Scarcely hirsute. My thanks aie due to Mr. 

 Swynfen Jcrvis, of Darla^ton Hall, Staffordshire, for fronds. 



Plenum, IVollaston. — Found in Devonshire, in 1860, by Mr. 

 G. B. AVollaston, of Chiselhurst, but not permanent. Another 

 plant has been found near Exeter, by Mrs. Thompson, of South 

 Lawn, Exeter. Dwarf, twelve inches in length, with a long 

 stipes, averaging from three to four inches. Lanceolate in form, 

 bipinnate. Pinntc opposite below, alternate above, the basal 

 pair of pinnules distant, the next two pairs approximate, the 

 rest crowded, the pinnules overlapping each other. Pinnules 

 somewhat oval, deeply serrate, almost devoid of an auricle, equal 

 in size, except the superior basal pinnule, which is rather larger. 

 About four pairs of pinnules on each pinna divided to the costa, 

 and indistinctly stalked, the remainder of the pinna is not split 

 to the costa. Apex of the pinnro blunt. In the upper portion 

 of the frond the pinnules are all decurrent, and the apex itself 

 is composed of a series of stalked pinnules. It will be unnecessary 

 to give an illustration. ^ly thanks are due to Mrs. Thompson, 

 for fronds. 



