680 poLYPODiACE^. [Lastrea. 



stipes and rachis more or less chaffy, fructification confined to the 

 upper half of the frond. E. B. t. 1563. Br. Fl. p. 568. 

 On hedffebanks, iu moist woods, &c. ; very rare with us. 



E- Med. — A single root on a bank of a lane close to Cooper's, near Bembridge, 

 Dr. Bell-Salter, 1841 — 42!!! Bank on the left-hand side of the road going from 

 the lodge at E. Cowes castle towards Whippingham, Mus G. Kildcrhee!* [In 

 the lane and copse by Little Smallbrook, a few plants only, A. G. More, Esq., 

 Edrs.] 



This species, if such it really is, may be distinguished from the following by its 

 much narrower more truly lanceolate fronds, gradually attenuated at the base, of 

 a peculiarly firm rigid texture and brighter green colour. 



My kind and liberal friend. Dr. J. B. Wood, of Manchester, to whom I am 

 indebted for making me better acquainted with this and the following species, 

 remarks that A. lohatum is the hardier and more northern plant, growing in situ- 

 ations and at elevations where A. angulare is seldom or never found, the latter 

 showing an exclusive predilection for low, warm and sheltered localities. Sir W. 

 Hooker observes that A. angulare is wanting in Scotland, where A. lohatum is 

 sufficiently common. 



3. P. angulare, Newman. Angular-leaved Shield-fern. Fronds 

 broadly lanceolate bipinnate abrupt or truncate at the base 

 scarcely rigid, pinnules distinctly petiolate plane ovate sublunate 

 obtuse aristate obliquely truncate at the base with a large auricle 

 on its upper side the margins deeply serrated spinulose, lower- 

 most pinnules often deeply pinnatifid, those of the basal pair 

 scarcely larger than the rest and nearly equal, stipes and rachis 

 very chafly. E. B. t. 2776. Br. Fl. p. 568. 



On moist shady hedgebanks and in woods in low sheltered situations ; abun- 

 dantly. 



IV. Lasteea, Presl. Shield-fern. 



" Sort nearly circular, covered by an indusium seated upon the 

 back of the lateral veins. Indusium reniform, attached by the 

 sinus." — Bab. Man. 



1. L. Thelypteris, Presl. Marsh-fern. Yect. Ground-fern. 

 " Fronds pinnate, pinnae Hnear-lanceolate pinnatifid, and as well 

 as the rachis slightly pubescent, the segments ovato-acute entire, 

 sori marginal contiguous at length confluent." — Br. Fl. p. 569. 

 Aspidium. E. B. xv. t. 1018. Francis, Ferns, p. 29, t. 2, fig. 6. 

 Newman. 



In low boggy or marshy meadows, but not common, and seldom seen in fructi- 

 fication. 



E. Med. — On a piece of boggy land under a high bank above Knighton Lower 



•»^ The specimen from Cowes in Miss Kilderbee's herbarium Dr. Bell-Salter 

 considers as a lonchitidiform var. of A. angulare, but the frond, which exhibits no 

 fructification, has the narrow-lanceolate outline and attenuated base which dis- 

 tinguishes A. lobalum ; the basal pair of pinnules, too, of each pinna is very une- 

 qual, and the pinnules themselves decurrent almost throughout, a very few of the 

 inferior ones on the lowermost pinnae only being as distinctly petiolate as in the 

 true A. angulare. The plant appears, besides, lo possess the rigidity of texture 

 characteristic of the genuine A. lobatum. 



