CHARACTERS OF TRIBES AND GENERA. 87 



OBS. In my " Genera of Ferns," 1841, I noticed the 

 peculiarity of the species in the preceding genus, and also of 

 this, but then did not deem the characters sufficient to 

 separate it as a genus from Poly podium. Later observa- 

 tions, and the views of both Presl and Fee, induce me now 

 to separate them from true Polypodinms. 



Sp. C. obliquatus (5Z.) (Bedd. F. Brit. Ind. pi. 167), 

 C. celebicus (Bl.\ C. venulosum (#.), C. blechnoides 

 (/. 8m.) , (Grammitis llechnoides, Grev. 1848*, Cryptosorus 

 Seemannii, /. $ra., Bonplandia, vol. 9), C. Khasyanus 

 (Hook.). 



Natives of Java, Celebes, Luzon, Fiji, Ceylon and India. 



7. THTLACOPTERIS, Eze. Herb. (1856). 

 Polypodium, sp. Blume. Hook, Sp. Fil. 



Surculum slender. Fronds distant, stipate, linear, pinna- 

 tifid, membraneous, smooth, 1 to 2 feet high, 2 inches 

 broad, laciniae articulate with the rachis. Veins once 

 forked, venules free, the exterior branch soriferous. 

 Receptacles punctiform, terminal, deeply immersed in a cyst, 

 forming elevated papillae on the upper side. Sori trans- 

 verse, uniserial near the margin of the lacinias. 



Type. Polypodium papillosum, Blume. 



Illust. Bl. Fl. Jav., p. 191, t. 88. Horsf. PI. Jav. Rar., 

 p. 6, t. 2. 



OBS. Finding that the Polypodium papillosum of Blume 

 does not well associate with any of the species of Polypo- 

 dium as here restricted, I therefore deem it best to follow 

 Kunze in adopting it as a distinct genus. The forked 

 venation distinguishes it from Prosaptia and Cryptosorus 

 and the deeply-impressed receptacles and the articulation 

 of the segments with the rachis from true Polypodium. 



* Ann. Mag. Nat. Hist., 2nd ser. vol. 1, p. 17. 



