132 FERNS : BRITISH AND FOEEIQN. 



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

 long, smootli. Vems simple, parallel, their apices combined by 

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

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

 marginal, naked soriis. 



1. H. SCOlopendrina, Presl, Tent. Pterid. i. 8, /. 21. Pteris 



scolopendrina, Bory ; 8w. Taeniopsis scolopendrina, 

 J. 8m. Oen. Fil. 1841. Tseniopteris Forbesii, Sooh. et 

 Bauer. Gen. Fil. t. 76 B. Vittaria Zeylanioa, Fee, 

 Vittwr. t. l,f. 3. — Ceylon and Mauritius. 



2. H. lineata, J. 8m. Vittaria Kneata, 8w. ; Schk. t. 101 B; 



J. Sm. Gat. 1857 ; Lower's Ferns, 2, t. 65 A. Taeniopsis 

 liaeata, J. 8m, Gen. Fil. 1841. — Tropical America. 



58. PTEROFSIS, Desv. 



Vernation uniserial, contiguous ; sarmentum short, cffispitose. 

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

 Ferns uniform, reticulated, forming transverse elongated, hexa- 

 gonoid areoles. Beeeptadea compital, elongated on the exterior, 

 transverse anastomose, forming a linear, continuous, marginal 

 sorus. 



^enns 58.— Portion of frond, slightly enlarged. No. 1, 



