336 



Ferns of British India, and Ceylon. 



disk of the frond, a single pair runs through each terminal segment 

 connivent at the apices ; venation manifest prominent beneath, all 

 the costse are united by transverse flexuose costules, these by a lon- 

 gitudinal flexuose vein through the middle into two nearly equal 

 series of costular areoles, then again into lesser ones all subquadran- 

 gular ; sori small, superficial copious, scattered in the areoles, but 

 generally in series more or less perfect and accompanied by a resinous 

 or gummy substance. R.Br, in Hook, and Grev. Ic. Fil. t. 168-9. 

 Hook. Sp. Fil. v. 99. Wall. Cut. n. 287. Bedd. F. B. I. t. 80. 



Khasya, up to 4,000 feet, 

 Borpani, 2,000 feet, and elsewhere, 

 Cachar, at Luckipoor, 250 feet 

 elevation, Jaintea, Sylhet station 

 in the plains. 



2. DlPTERIS HORSFIELDII. 



(Br.) Stipe strong, 3-5 feet long ; 

 frond 1-3 feet long, and much 

 broader, the main lobes reaching 

 three-quarters of the way down, 

 the edges sharply toothed, texture 

 subcoriaceous, upper surface dark- 

 green, lower very glaucous, main 

 veins very prominent, dichoto- 

 mously forked ; areoles copious ; 

 sori very minute, scattered irreg- 

 ularly, especially plentiful near the 

 F. Br. Hook. Sp. Fil. v. p. 99. 

 conjugatum, Kaulf. (not La?n.) 



N°I85. 



DlPTERIS HORSFIELDII. {Br.) 



main veins, confluent, not gummy 

 Bedd. F. B. I. t. 321. Polyp 

 Polyp. Dipteris (Bl.), Hook. Syn. Fil. 362. 



Malacca, Penang and Singapore. 



(Also in the Malay and Pacific Islands.) 



3. Dipteris Lobbiana. (Hook.) Stipes 1 foot and more long; 

 fronds coriaceous, 8-12 inches long, flabellifoi m, glabrous, 3-4 times 



