GYMNOCABPIUM DEYOPTEEIS. 



5r 



OAK FERN, lone-third the natural size) 



Genus. — Gymnocarpium, (see page 49). 



Species. — Deyopteeis. Rhizome creeping : stipes erect, 

 longer than the frond, purplish, glabrous : frond triple, deltoid, 

 smooth, the three branches pinnate : pinnse pinnatifid : lateral 

 veins usually simple : involucre generally wanting : clusters of 

 capsules near the extremity of each lateral vein, forming a mar- 

 ginal series : colour bright green. 



Ipwnpt^, fyum, fe. 



Polj'podium Dryopteris, Linn. Sp. PL 1555 ; Lightf. Fl. Scot. 



678 ; Huds. Fl. Ang. 460 ; With. Arr. 780 ; Sm. E. F. iv. 



283, E. B. 616 ; Mack. Fl. Hih. 338 ; Franc. 24 ; Newm. 



F. 123 ; Hook, and Am. 567 ; Moore, 53. 

 Polypodium Dryopteris, Bolt. Fil. Brit. 52, t. 28. 

 Polystichum Dryopteris, Both, Fl. Germ. iii. 80. 



I 



