130 



FERNS : BRITISH AND FOREIGN. 



elongated, immersed, rarely superficial, forming linear, con- 

 tinuous or interrupted reticulated son. 



Genus 55. Outline portion of fertile frond, under side. No. 4. 



1. A. lineatum, Kaulf. Polytasnium lineatum, Desv. ; J. Sm. 



Gen. Fil ; Hook. Gen. Fil. t. 107. Vittaria lanceolata, 

 8w.; Schk. Fil. t. 101 B. West Indies. 



2. A. lanceolatum, Kaulf. Hemionitis lanceolata, Linn. ; 



(Plum. Fil. 1. 127,/. c) ; Schk. Fil. t. 6. West Indies. 



3. A. Cayennense, Kaulf. ; Kunze, Anal. t. 19, /. 2. He- 



mionitis Cayennensis, Desv. ; Presl. Tropical 

 America. 



4. A. reticulatum, Kaulf. Hemionitis reticulata, Forst. 



Sclik. Fil. t. 6. Indian, Malayan, and Pacific Islands. 



4. Vittarice. Fronds simple, linear. Sori transverse, 

 continuous, marginal or anti-marginal. 



56. VITTARIA, 8m. 

 Vernation uniserial, contiguous ; sarmentum short, furnished 



