Ferns of British India and Ceylon. 



401 



Himalayas and Khasya, from 500-4,000 feet, and Mr. Clarke 

 makes it a separate variety, under the name of longifrons ; it, however, 

 graduates into the type, I believe it is not separated at Kew, nor 

 are there any characters to distinguish it ; they both have the costa 

 very red sometimes, Mr. Clarke also gathered small specimens with 

 simple fronds (not in fruit, however). 



(Mr. Clarke is quite wrong in referring Gymnopteris costata, var. 

 deltigera, to this genus, it has quite different venation.) 



GENUS LXXVI.— ANTROPHYUM. (Kaulf) 

 {Antron, a cave, hollow ; phyo, I grow.) 



Sori reticulated or interrupted, carried 

 along the veins in line, the receptacles 

 immersed and forming grooves, or super- 

 ficial ; veins uniform reticulated ; fronds 

 adherent to the caudex. simple, with or 

 without a defined midrib, fleshy-coriaceous 

 in texture, all the species closely allied. 



1. Antrophyum reticulatum. 

 (Kaulf.) Stipe none or very short, the frond 

 being decurrent down to the base ; fronds 

 6-15 inches long, by 1— 1 1- inch broad, 

 linear-lanceolate or acuminate, very gradu- 

 ally narrowed downwards ; midrib none 

 or sometimes present towards the base of 

 the frond, the areoles very long and 

 narrow and distinctly raised on the upper 

 surface ; sori immersed, sometimes con- 

 fluent. Kaulf, Fh, yd Man. Foug. 14. 



N°235. 

 ANTROPHYUM RKT1CU LA- 

 TUM. {Kaulf.) 



Bedd. F. S. I. t. 231. 



Ant. coriaceum, Wall. Cat. 43. Ant. scmicostatum (Bl.), Hook. 



Syn. Fil. 393. 



All the South Indian, Ceylon, and North Indian specimens 

 1 to me to belong to one species ; "coriaceum" is sa : d to differ 



27 



