286 CRYPTOGAMIA— FILICES. Aspidium. 



F. tenuissime et profunde denticulata Montbelgardica. Baiih. 



Hist,v.3.p.2.73\.f. 

 F. non ramosa minor sylvatica repens. 31oris. v. 3. 580. sect. 14. 



^.4./. 17. 

 Dryopteris. Lob. 7c. 8 1 5 . /. Ger. Em. 1 1 3o ./. 



In boggy meadows and marshes, especially on a gravelly soil. 



On St, Faith's Newton bogs near Norwich. Mr. Pitchford. At 

 Lound, near Yarmouth. Mr. D. Turner. In Terrington Car, 

 Yorkshire. Mr. R. Teesdale. Bedfordshire. Abbot. Cambridge- 

 shire. Relhan. Abundant in Scotland. Dickson, Hooker. At 

 Wroxham, Norfolk. 



Perennial. July. 



Root creeping extensively, by means of long, slender, blackish, 

 thread-shaped, smooth or downy runners. Fronds rather scat- 

 tered, quite erect, deep green, delicate and smooth, rarely a little 

 hairy, as in Engl. Bot., each about fifteen or eighteen inches 

 high ; their stalks slender, uaked, or only slightly scaly. Leaflets 

 elongated horizontally, taper-pointed, very deeply pinnatifid ; 

 their segments when barren obtuse, and obscurely crenate ; 

 when fertile narrower, more acute, and revolutej the lower 

 part usually longest. Midrib sometimes densely hairy. Cap- 

 sules minute, in small round masses, each at first covered by a 

 thin, white, lacerated cover, fixed by the centre, but soon ele- 

 vated and obliterated, the jnasses running together into simple, 

 sometimes aggregate, lines, and nearly covering the lobes, so 

 that Linnseus was induced, by some such advanced specimens, 

 to refer this Fern to his genus Acrostichum, into which indeed 

 he originally admitted several discordant plants. 



3. A. Oreopteris. Heath Shield-fern. 



Frond pinnate; leaflets deeply pinnatifid, entire, besprinkled 

 underneath with resinous globules. Masses nearly mar- 

 ginal, at length confluent. Root tufted. 



A. Oreopteris. Sw. Syn. Fil. 50. Willd. Sp. Pl.v. 5. 247. Fl. Br. 



1120. Hook. Scot. p. 2. 154. 

 Polypodium Oreopteris. Ehrh. Crypt. 22. Dicks. Tr. of Linn. 



Soc.v.l.lSl. H.Sicc.fasc.lAS. With. 775. Hull23S. Sibth. 



270. Teesdale Tr. of Linn. Soc.v.2. 113. Engl. Bot. v. 15. 



t.lOlO. Fl.Dan.t.\\2]. Hoffm. Germ.v.2.5. 

 P. Thelypteris. Huds. 457. Bolt. Fil. 40. t. 22. f. 1, 2. Hedw. 



Theor. 44. t. 6. 

 P. fragrans. Huds. 457 ? as suggested by Mr. Teesdale. 

 P. limbospermum. BellardiAct. faurin. v. 5. 253; from the author. 



Allion. Auctuar. 47. 

 P. pterioides. Villars Dauph. v. 3. 841 ; from the author. 

 P. montanum. Fogler Diss.— Willd. Berol. 29 1 . 



