132 



FERNS I BRITISH AND FOREIGN. 



csespitose. Fronds simple, narrow, linear or lanceolate, 1-2 feet 

 long, smooth. Veins simple, parallel, their apices combined by 

 a transverse intra-marginal vein, which is immersed in a groove, 

 and becomes the receptacle, forming a linear, continuous, inter- 

 marginal, naked sorus. 



1. H. scolopendrina, Presl, Tent. Pterid. t. 8, /. 21. Pteris 



scolopendrina, Bory ; Sw. Tasniopsis scolopendrina, 

 J. 8m. Gen. Fil. 1841. Taeniopteris Forbesii, Hook, et 

 Bauer. Gen. Fil. t. 76 B. Yittaria Zeylanica, Fee, 

 Vittar. 1. 1,/. 3. Ceylon and Mauritius. 



2. H. lineata, J. 8m. Yittaria lineata, Sw. ; Sclik. t. 101 B ; 



J. 8m. Cat. 1857 ; Loive's Ferns, 2, t. 65 A. Teeniopsis 

 lineata, J. 8m. Gen. Fil. 1841. Tropical America. 



58. PTEROPSIS, Desv. 



Vernation uniserial, contiguous ; sarmenturn short, ceespitose. 

 Fronds simple, linear, acuminate, 6-18 inches long, rigid, smooth. 

 Veins uniform, reticulated, forming transverse elongated, hexa- 

 gonoid areoles. Receptacles compital, elongated on the exterior, 

 transverse anastomose, forming a linear, continuous, marginal 

 sorus. 



<5enus 58. Poition of frond, slightly enlarged. No. ' . 



