86 CHAEACTERS OF TEIBES AND GENEEA. 



* Veins free. 



Sect. 1. POLYPODE2E. 



5. PEOSAPTIA, Presl (1836). 

 DavallicB sp., Swartz. Hook., Sp. Fil. 



Surculum short, caespitose. Fronds contiguous, linear- 

 lanceolate, pectinate-pinnatifid, 6 to 12 inches high ; lacinia? 

 oblong or linear, obtuse. Veins simple, free, internal. 

 Receptacles terminal, seated in a marginal cyst formed of 

 the substance of the frond and containing the sporangia. 



Type. Davallia contigua, Swartz. 



lllust. Hook and Grev., t. 105, 141. Moore, Ind. Fil., 

 p. 76 B. 



OBS. The urceolate marginal cyst containing vertical 

 sporangia is analogous to the indusiate sori of Davallice, 

 but differs entirely in being formed in the substance 

 of the frond, and in having no indusiate membrane. The 

 texture and pinnate character of the fronds indicates the 

 affinity to be with the pinnatifid section of Polypodiuin. 



Sp. P. contigua (Sw.). P. Emmersoiii (Hook). 



Natives of Ceylon, Malay, and Polynesian Islands. 



6. CEYPTOSOEUS, Fee (1843). 

 Polypodium, sp., HI. Hook. Sp. Fil. Ccelopteris, A. Br. 



Surculum short. Fronds contiguous, linear-lanceolate, 

 pinnatifid-pectinate, 1 to 1J feet long. Veins of lacinise 

 simple, internal. Receptacles immersed, forming an oval 

 cyst, the margin surrounded by incurved rigid hairs in. 

 closing the sporangia. 



Type. Polypodiuin obligatum, Plume. 



lllust. Fee, Gen. Fil., t. 19. Blume, Fl. Jav., t. 58. B. 

 84. B. 



