Ig4 F I L I C E S. 



1. Plocnemia Leuceana, Presl. 



Plocnemia Leuceana, Presl, Tent. Pterid. p. 184, t. 7, f. 12 ; J. Sm. in Hook. Jour. 



Bot. 4, p. 184; Hook. Gen. Fil. t. 97. 

 Poli/podium Leuceanum, Gaud. Bot. Freyc. Voy. p. 361, t. 6. 



Hab. Samoan and Feejee Islands. 



The rhizoma or trunk of this truly beautiful Fern is short, thick, 

 erect, and surmounted by large, spreading, bipinnate fronds, from 12 

 to 15 feet in length. All our specimens are prolific in sori, which 

 are arranged in a single row on the segments, equidistant between the 

 costa and margin, commencing in a line with the base of the sinus 

 and continuing outwards to the very point : in one or two specimens 

 the divisions of the fronds are shorter and more contracted than in 

 the usual form ; and in this state of the plant there is a row of distant 

 and larger sori, running parallel with the costa of the pinnules and 

 seated on an inferior veinlet arising from the arched venules, the 

 former terminating in the blunt tooth at the base of the sinus. 



59. CYRTOMIUM, Presl 



(Aspidii Spec. Sw., Wall.) 

 1. Cyrtomium caryotideum, Presl. 



Cyrtomium caryotideum, Presl, Tent. Pterid. p. 86, t. 2, f. 26; Hook. Gen. Fil. t. 



49, C. 

 Aspidium caryotideum, Wall, ex Hook. & Grev. Ic. Fil. t. 69 (opt.). 



Hab. Mountains of East Maui, Sandwich Islands ; rare. 



This species was founded upon a Fern from the East Indies, and 

 figured in the Icones Filicum, of which our Sandwich Island plant is 

 almost a perfect counterpart ; although in some of our specimens the 

 pinnae are sometimes three-lobed. 



