88 



POLYSTICHUM ANGULAllE. 



small size of the acute pinnules, and their distinct and 

 slender footstalk; the auricle is distinct, acute, and in the 

 lower pinnules is separated by a deep incision from the rest of 

 the pinnule. Mr. Moore remarks that it is "quite like the 

 Italian Hastulatum of Tenore, as figured in the 'Flora Napol- 

 itana.' " It is unnecessary to give a woodcut of this variety. 



Fig. 55. — Irish form. 



Fig. 56. — Devon form. 



PRiEMORSUM, Allchin. (Figs. 55, 56.) — Found in Ireland, 

 in 1853, by Dr. Allchin, and subsequently in Devonshire and 

 Hampshire, by Mr. G. B. Wollaston. It is a dwarf-growing 

 form, with irregular laciniate pinnse; the pinnules truncate, 

 marginate, and verrucose. The Hampshire form of this Fern 

 more closely resembles the Irish form, but is narrower. Length 

 of frond eighteen inches, width four inches and a half. The 



