POLYSTICHUM AXGULARE. 161 



Pinnre about equal in width, except near tlie apex, where 

 abruptly pointed; pinnules alternate, except the basal ones, 

 which are sub-opposite. The inferior pinnules rather larger 

 than the superior ones. The superior basal pinnule largest, 

 having an unequal-sized pair of stalked lobes, above which a 

 very deeply-divided lobe or auricle, the remainder of the 

 pinnule cut into biserrated or sub-biserrated lobes, surmounted 

 with spines that are frequently bended and hooked at their 

 apices. The other pinnules strongly auricled, this lobe being 

 divided quite to the base, the other lobes deeply divided. A 

 very distinct and beautiful form. Sori confined to the upper 

 portion of the frond; about seven spore cases on the superior 

 basal pinnules, and from four to six on the four large pairs of 

 pinnules, and from three to one on the remainder. My thanks 

 are due to Mrs. Thompson for fronds. 



Fig. 138. 



PuLCHELLUM, WollastoK. (Fig. 138.) — Found In Sussex, by 

 Mr. G. B. Wollaston. The present variety has a biserrate 

 form, but is beautifully diminutive in all its divisions. My 

 thanks are due to Mr. C. Elworthy, of Xettlccombe, and the 

 Rev. F. Mules, of Marwood, for fronds. 



■ pROLiFEauM Hardingit, Loicc. — Found in South Devonshire, 

 by Mr. Thomas Wray Harding. Fronds* two feet in length, 

 lanceolate. Pinnyc equal in width, except at the apex, crowded, 

 there being from forty-five to fifiy pairs of pinnje. Stipes 

 very brief, very scaly, as well as the rachls and rachides. In 

 general appearance it is not unlike ProUferum Wollastoniy but 

 differs in being tripinnatc; the inferior pinnules are longer than 

 the superior ones, and the superior basal pinnule is longer than 

 the others; segments alternate, the basal three or four pairs 

 divided 'to the costa, mostly briefly stalked, and nearly linear; 

 pinnules ascending, except the anterior basal one, which is hori- 



