AN ENUMERATION OF CULTIVATED PERNS. 



131 



with hyaline squamae. Fronds simple, linear, smooth, rigid or 

 flaccid and pendulous, from a few inches to 2-3 feet in length. 

 Veins simple, forming an acute angle with the midrib, their 



n 



Genus 56. Outline portion of frond, natural size ; ditto enlarged. No. 1. 



apices prolonged into atransverse marginal vein, which becomes 

 the receptacle. Sporangia seated in an extrorse slit of the 

 margin. Sori marginal, linear, continuous. 



1. V. zoster gefolia, Bory; Fee, Mem. Fil t. 2,/. 2; Lowe's 

 Ferns, 2, t. 65 B. Mauritius. 



57. HAPLOPTERIS, Presl 

 Vernation uniserial, contiguous ; sarmentum short, becoming 



Genus 57. Portion of frond, slightly enlarged. No. 1. 

 K2 



