78 A>'EM1A ADIAjSTIFOLIA. 



Fronds bipinnatc, except at the base, where tripinuatc. 

 Pmnae, two together at the base of the frond, then alternate, 

 apex of the frond attenuate. Pinnules, basal ones deeply di- 

 vided, wedge-shaped at the base, and sharply dentate on the 

 margin, the other pinnules acutely wedge-shaped at base, their 

 apices rounded. Fertile frond tripartite, the two opposite seg- 

 ments contracted, erect, constituting two sporangiferous racemes. 

 The pair of fertile pinnae at the base of the frond are situated 

 on long slender stalks, and usually there is a third fertile pinna 

 situated immediately above with a sterile pinna, the rest of the 

 pinniE being barren. 



Rachis and stipes very slender, and copiously hirsute. Pin- 

 nules also hirsute. 



Length of frond twelve inches. 



Veins forked and free. 



Sporangia, oval, attached to the base, opening vertically on 

 the exterior side. 



I am indebted to Mr. J. Smith, of the Royal Gardens, Kew, 

 for the fronds from which the present illustration has been 

 made. 



