POLYPODIACE.E. 193 



3. Lastrea falciculata, Presl. 



Lastrea falciculata, Presl, Tent. Pterid. p. 75, t. 2, f. 3. 

 Aspidium falciculatum, Raddi, Plant. Brasil. p. 81, t. 47. 

 Polystichum falciculatum, Gaud. Bot. Freyc. Voy. p. 328? 



Hab. Vicinity of Rio Janeiro, Brazil : in forests. 



4. Lastrea patens, Presl. 



Lastrea patens, Presl, Tent. Pterid. p. 75. 



Aspidium patens, Sw. Syn. Fil. p. 49 ; Raddi, Plant. Brasil. p. 32, t. 48. 



Hab. Rio Janeiro, Brazil. Vicinity of Lima, Peru. 



5. Lastrea attenuata, Sp. Nov. (Tab. 26.) 



L. stipite Icevi sulcato; frondibus pinnatis ; pinnis altemis oblongo-lan- 

 ceolatis caudato-acuminatis pinnatipartitis apice serrulatis supra 

 glabris subtus glanduloso-pubescentibus, laciniis oblongo-lanceolatis 

 acutis falcatis; casta utrinque pubescente; sorts parvis biserialibus; 

 indusio reniformi piloso ; sporangiis sessilibus gkmduUferis. 



Hab. Tahiti, Society Islands : in mountain forests. 



Stipe smooth, sulcate, with a single narrow groove in front. Fronds 

 3 feet and upwards in length, elongated-lanceolate, rather flaccid, 

 smooth on the upper surface, glandular-pubescent beneath, pinnate; 

 the apex pinnatifid. Pinnce distant, spreading, alternate, 5 or 6 inches 

 long, an inch broad, oblong-lanceolate, pinnatifid almost to the costa at 

 the base, and contracting rather gradually into a long, somewhat 

 caudate, finely serrate point. Segments oblong-lanceolate, acute, falcate, 

 the margin entire, recurved, with appressed hairs, the two inferior 

 pairs much the shortest. Rhachis and costa more densely pubescent on 

 the upper than on the under side ; the former bearing a short and ob- 

 tuse black gland at the base of the petiole of the pinnae on the inferior 



49 



