Cystopteris bulbifera Bernh. 1806. Schr. Neu. 
Journ. Bot. i : 2 pt. 26. Eaton^ Ferns N. Am. 
2:55.1.53. ff. 13-17; in Gray, Man. 689. 
Underw, in 111. Fl. i : 12. Clute^ Ferns 212. 
Waters^ Ferns 255. 
Filix bulbifera Underw. 1900. Nat. Ferns 119; 
in Britt. Man. 17. 
BULBIFEROUS FeRN. 
Plants 3-6 dm. or higher ; leaves 3-pinnatifid below ; 
pinnae lanceolate, sessile, 6 cm. or less long ; pinnules 
oblong-lanceolate, 2 cm or less 1., decurrent on the ra- 
chilla, lobes toothed. Easily recognized by its attenuate 
apex and bulbils (3-4 mm. diameter). 
In shaded, rocky places. Summer. 
Along Potomac River, Fairfax Co., Va., Maxou, Palmer; 
Harper's Ferry Henshaiv \ Natural Bridge, Evermann ; near 
Marion, Miss Vail, Mr, S?ualL 
tt Leaves with an acute apex. 
2. F. fragilis (L.) Underw. 
Poly podium fragile L. 1. c, 
Cystopteris frag His Bernh. L c. Eaton ^ 1. c, 
2 r 49. t. 53. ff. 1-8 ; in Gray, 1. c. 689. Und, 
in 111, Fl. I : 13. Clute^ 1. c. 209. Waters^ 1. c. 
259, 
Eilix fragilis Unde7'w. 1900, Nat. Ferns 119; 
in Britt. 1. c. 
49 
