340 FILICE& [Aspidium. 



longer; sori marginal. Br. Fl. ed. 3. p. 450. E. Fl. v. iv. 

 p. 286 Polypodium Oreopteris, Ehrh.E.Bot. t. 1019. 



Mountainous countries, in heaths and dry pastures ; plentiful in the 

 County of Wicklovv, and in the southern, western, and northern coun- 

 ties. Readily distinguished by its marginal sori y and, when rubbed 

 between the hands, by its agreeable scent. 



6. A. Thelypteris, Sw. Marsh Shield-fern. Fronds pin- 

 nate; pinnae linear-lanceolate, pinnatifid, and as well as the 

 rachis, slightly pubescent ; the segments ovate, acute, entire ; 

 sori marginal, contiguous, at length confluent. Br. Fl. ed. 3. 

 p. 450. E. Fl. v. iv. p. 285. Polypodium Thelypteris y Linn. 

 E.Bot. t. 1018. 



Marshy and boggy places. In the demesne of Mucruss, Killarney. 

 Root creeping. 



7. A. cristatum, Sw. Crested Shield-fern. Fronds linear- 

 lanceolate, pinnate; pinnae cordate, attenuated, deeply pinna- 

 tifid, scarcely again pinnate ; segments oblongo-ovate, obtuse, 

 acutely and not doubly serrated. Br. Fl. ed. 3. p. 450. 

 E. FL v. iv. p. 289. E. Bot. t. 2125. Hook, in Fl. Lond. N. 

 S. t. 113. Polypodium cristatum^ Linn. 



Boggy heaths, rare. Found in the demesne of Sir Hugh Gough, at 

 llathronan near Clonmel ; by Mr. G. S. Gough in 1835. 



8. A. Filix mas, Sw. Blunt Shield-fern. Fronds bipinnate; 

 pinnules oblong, obtuse, serrated ; sori near the central nerve ; 

 stipes and rachis chaffy. Br. Fl. ed. 3. p. 450. E. Bot. t. 1458, 

 and t. 1949. (A. cristatum.) Polypodium Filix mas, Linn. 

 P. smaller; stipes less chaffy ; involucres slightly tubercled ; 

 pinnules inciso-serrulate. 



Woods, dry ditches, and shady banks, &c. frequent. A beautiful 

 robust Fern j three to four feet high ; its fronds growing in a circle. 

 I have seen it in the County of Wicklow with a caudex eight 

 inches above the ground. /3. Found on Mangerton by Doctor Taylor, 

 growing among Luzula sylvatica, where I have also observed it. 



9. A. spinulosum, Willd. Prickly-toothed Shield-fern. Fronds 

 subtripinnate ; pinnules oblong, distinct, inciso-pinnatifid ; seg- 

 ments mucronato-serrate ; stipes chaffy. Br. Fl. ed. 3. p. 451. 

 A. dilatatum, Hook. Scot. 2. p. 154. 



. fronds triangulari-ovate ; lower primary pinnae only once 

 pinnate. A. spinulosum, E. Bot. t. 1460. 



/3. fronds triangulari-ovate ; lower primary pinnae bipinnate ; 

 pinnules often convex. A. dilatatum, Willd. E. Bot. t. 1461. 

 E. Fl. v. iv. p. 293 Polypodium dilatatum, Hoffm. 



Moist woods, and shady and rocky places in subalpine situations. 

 #. generally in moist woods. I perfectly agree with Doctor Hooker 

 in uniting A. spinulosum and A. dilatatum of authors. Plants of the 

 former brought from Spike Island, where I gathered the specimen 

 figured in E. Bot. after two years cultivation having assumed all the 

 characters of the latter. 



