CHARACTERS OF TRIBES AND GENERA. 
* Veins free. 
Sect. 1.—Potyropzz, 
5. Prosapria, Presl (1836). 
Davalliæ sp., Swartz. Hook., Sp. Fil. 
Surculum short, cæspitose. Fronds contiguous, linear- 
lanceolate, pectinate-pinnatifid, 6 to 12 inches high; lacinia 
oblong or linear, obtuse. Veins simple, free, internal. D 
Receptacles terminal, seated in a marginal cyst formed o 
the substance of the frond and containing the sporangia. ` 
Type. Davallia contigua, Swartz. 
Illust.—Hook and Grev., t. 105, 141. Moore, Ind. Fil., 
p. 76 B. E 
ge ris urceolate marginal cyst containing vertical 
sporangia is analogous to the indusiate sori of Dawalli 
but differs entirely in being formed in the substance 
of the frond, and in having no indusiate membrane. Th 
_ texture and pinnate character of the fronds indicates th 
i Seong’ to be with the pinnatifid section of Polypodium. 
20 Der, contigua (Sw.). P. Emmersoni (Hook). 
Natives of Ceylon, Malay, and Polynesian Islands. 
6. Cryprosorus, Fée (1843). 
Polypodium, sp. Bl. Hook. Sp. Fil. Oclopteris, A. Br. 
_ Sureulum short. Fronds contiguous, linear-lanceolate, 
. pinnatifid.pectinate, 1 to li feet long. Veins of lacinie 
Simple, internal. Receptacles immersed, forming an o 
cyst, the margin surrounded by incurved ensi Mus 
closing the sporangia, 
Type. Polypodium obligatum, Blume, 
. Illust.—Fée, Gen. Fil, t. 19. Blume, Fl. Ges b 58. 
e 84. B. : 
