POLYPODIACE.E. J43 



6. DlPLAZIUM FALCATUM, Sp. Nov.. 



D. stipitibus angulatis liinc sulcatis Icevibus; frondibus glabris membra^ 

 naceis bipinnatis; pinnis alternis diver gentibus, inferioribus dis- 

 tantibus petiolatis pinnatis, summis sessilibus coadunatis prof wide 

 pinnatifidis ; pinnulis laciniisve oblonxfo-lanceolatis vel oblongis obtusis 

 falcatis grosse serraiis, serraturis dentatis; rhachi Icevi sulcata; sorts 

 elongatis decussatis; indusio membranaceo. 



Ha$. Island of Tutuila, Samoan Gro.up; in forests, near Pago-pago 

 Bay. 



Fronds glabrous, membranaceous, rather lax in habit, 2 feet and up- 

 wards in length, from 12 to 14 inches broad, in circumscription ovate- 

 oblong-acuminate, smooth on both sides, bipinnate at the base ; the in- 

 ferior divergent pinnce, distant and petiolate, while towards the apex 

 they are sessile, and only deeply pinnatifid, becoming confluent in the 

 acuminated point. Pinnules or lobes one to 11 inches in length, oblong- 

 lanceolate or oblong, obtuse, the margin coarsely and deeply serrated, the 

 points of the serratures sharply toothed. Stipe and rhachis smooth, 

 angled, sulcate in front. /Sori elongated, decussate. Indusmm membra- 

 naceous. 



Distinguished from the preceding species by its larger fronds, bipin- 

 nate at the base, and by the oblong-lanceolate, falcate, and coarsely 

 serrate pinnules. 



# * * * Frondes bipinnatse, pinmdis phmatifidis. 

 7. DlPLAZIUM ARBORESCENS, Sw. 



Diplazium arborescens, Sw. Syn. Fil. p. 92 j Willd. Spec. PI. 5, p. 354; Hook. & 

 Am. Bot. Beech. Woy. p. J74. 



Hab. Tahiti, Society Islands. Samoan and Feejee Islands ; where 

 it abounds. 



