AN ENUMERATION Oh' CULTIVATED J?ERNS. 



138 



1. P. angustifolia, Besv. ; Hook, et Bauer. Gen. Fil t. 77 B. 

 Taanitis angustifolia, JR. Br. Pteris angustifolia, Sw. ; 

 Willd. Pteris tricuspidata, Linn. ; Plum. Fil. 1. 1 10, 

 var. comosa, J. 8m. — West Indies. 



59. DICTYOXIPHITTM, Hook. 

 . Vernation fasciculate, erect. Fronds simple, 

 linear-lanceolate, attenuated and decurrent on 

 the stipes, 1-3 feet long. Veins compound 

 anastomosing. Receptacles compital, elongated, 

 immersed in an extrorse marginal groove, which 

 is indusiform. Sori linear, continuous. 



1. D. Panamense, Hook. Gen. Fil. t. 62 ; J. 8m. Genus 59 ._p or t ion 

 Gen. Fil.; Lowe's Ferns. 8, t. 69. Lindssea of , fertile frond, 

 Panamensis, Mettn. Hoolc. Fil. Exot. ' 

 t. 54. — Panama. 



under side. No. 1. 



§ 5. Ceratopterice. Fertile fronds contracted ; segments 

 rcvolute, forming an universal indusium, enclosing tlie sporangia. 

 60. CEEATOPTERIS, Brongn. 

 Vernation- fasciculate, erect (annual). Fronds fragile ; t'>e 



Genus 60.— Portions of fertile and barren fronds, natural size : portion of 

 l^rtilj enlarged. Nq. 1. 



