132 



FERNS: BRITISH AND FOREIGN. 



caespitose. 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. i.8, /.21. Pteris 



scolopendrina, Bory ; Sw. Taeniopsis scolopendrina, 

 /. 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, /. 8m. Yittaria lineata, Sw. ; SchJe. 1. 101 B; 



J. 8m. Cat. 1857 ; Lowe's Ferns, 2, t. 65 A. Tseniopsis 

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



58. PTEBOPSIS, Desv. 



Vernation uniserial, contiguous ; sarmentum short, csespitose. 

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

 Veins uniform, reticulated, forming transverse elongated, hexa- 

 gonoiJ areoles. Receptacles compital, elongated on the exterior, 

 transverse anastomose, forming a linear, continuous, marginal 

 sorus. 



Genus 58. Portion of frond, slightly enlarged. No. 1. 



