176 POLYSTICHUM ANGULARE. 



Parvulum, Loioe. — This is a very small fronded variety, 

 found in Devonshire by the late Mr. Charles Jackson, of 

 Barnstaple. It is a variety that was very much esteemed by 

 Mr. Jackson, and is now in the possession of the llcv. Charles 

 Padley, of Bulwell Hall. The length of the frond is only 

 eight inches, and the width, (which is almost equal, except 

 towards the rapidly-tapering end) barely two inches and a half. 

 Pinnffi about twenty-three pairs, sub-opposite below and alternate 

 above, crowded except at the base, the basal pair narrower 

 than the others. Pinnules about eight or nine pairs, and an 

 ultimate elongated pinnule; narrow, the basal ones stalked, 

 entire, having a small spiny auricle, and a pointed spiny apex. 

 Stipes and rachis scaly. Colour grassy green. Sori diminutive 

 and costal, confined to the upper two inches of the frond, and 

 only six or eight spore, cases on each pinna. The superior basal 

 pinnule longest. My thanks are due to the Rev. Charles Jackson 

 for fronds. 



ExTREMUM, Lowe. — Found in Devonshire last spring by 

 Mr. Charles Elworthy, of Nettlecombe. It is a very handsome 

 form, more closely allied to Ohtusissimum than any other 

 variety; it is however more attenuated and narrower. The 

 pinnae are crowded so as to touch each other from the centre 

 of the frond upwards, and nearly so on the lower half of the 

 frond, but not to overlap, as is the case with Obtusissimum ; 

 the pinnules are also smaller in size, and oval in form, and 

 much more serrated, the spines minute, and not so distinctly 

 stalked. Length twelve to fourteen inches, width three inches. 

 Colour a vivid grassy green. The sori are situated only near the 

 apex of the pinnae, and the basal two thirds of the pinnae being 

 destitute of spore-cases, the frond seems as if belted with a 

 marginal band, and on this account the name of Extremum has 

 been selected to mark the position of the sori. My thanks are 

 due to Mr. Elworthy for fronds. 



Proliferum-angustatum, Stansfield MSS. — Raised at the 

 Vale Gardens, Todmorden, near Manchester, by the Messrs. 

 Stansfield. Fronds from one to two feet long, and only two 

 inches broad. Bipinnate; pinnae short and obtuse; pinnules 



