AN ENUMERATION OF CULTIVATED FEENS. 



133 



1. P. angustifolia, Besv. ; Hook, et Bcmer. Om. Ml. t. 77 B. 

 Tjenitis angustifolia, iJ. Br. Pteris angustifolia, Sw. ; 

 Willd. Pteris tricuspidata,iyiTOi. ; Plwm, Fil. t. UO, 

 va/r. comosa, /. Sm. — West Indies. 



59. DICTYOXIPHIUM, Hoole. 

 Vernation fasciculate, erect. Fronds simple, 

 linear-lanceolate, attenuated and decurrent on 

 the stipes, 1-3 feet long. Vems compound 

 anastomosing. Receptacles compital, elongated, 

 immersed in an extrorse marginal groove, which 

 is indusiform. 8ori linear, continuous. 



1. D. Panamense, Hooh. Oen. FU. t. 62 ; /. 8m. eg„„g 59.- Portion 



Gen.Fil.; Lowe'sFems,8,t.69. JjiRAsaBSiot fertile frond, 

 Panamensis, Mettn. Hook. Fil. Exot. "° ^^ *' ^" °' '" 

 t. 54. — ^Panama. 



§ 5. GeraioptericB. Fertile fronds contracted ; segments 

 revohite, forming am, nmmer-sal imdusiwm, enclosing the sporangia. 

 60. CERATOPTERIS, Brongn. 

 Vernation fasciculate, erect (annual). Fronds fragile ; the 



Genus 60,— Portions of fertife and barren fronds, natural size ; portion of 

 ertile enlarged. No. 1. 



