196 CHARACTERS OF TRIBES AND GENERA. 
plants show that D. irregularis and D. macrodonta (Cumin. 
gianum, Hook.) are distinct, the one having erect vernation, 
the other decumbent.. In the “Species Filicum” eight 
species are described, but I very much doubt if they are 
all distinct. 
100.—Dirreris, Reinw. (1825). 
Polypodium, sp., auct., and Hook. Sp. Fil. 
Vernation uniserial, distant, sarmentum setose-squamose. 
Fronds long stipate, 9 to 6 feet high, broad flabelliform in 
two lobes; the lobes digitately laciniated, lacinæ lanceo- 
late, entire or serrate. Primary veins radiating in each 
lobe, 2 or 3 times forked; secondary veins transverse anas- 
tomosing, and producing numerous venules and veinlets, 
forming sub-quadrangular small areoles and containing free 
clavate veinlets, Receptacles punctiform, compital. Sort 
small, numerous, and irregular, or in one species longitu- 
dinal uniserial, 
Type. Polypodium conjugatum, Kaulf. 
: Dies, Hook. and Grev., t. 168 and 169; Blume, Fi. 
Jav., p. 174, t. 81; Moore, Ind. Fil, p. 84, A.; 
Bb Flora Jav. 1, t. 1; Hook., Sen, Fil., t. 5, 
fig. 48, N. 
Oss.—This genus contains three known specios, natives of 
the East India, Malay and Polynesian Islands, two of them 
being remarkable for having large fronds resembling Fan 
Palms. This genus agrees in venation and character of 
. the sori with Drynaria, but its adherent vernation geen v 
it under the division Desmobrya. 
Sp. D. conjugate, Beimw. (P. Horgfieldii, Br); D. ` 
Walichii (Hook. and Gro); D. Lobbiana (Hook); Bedd. — 
F. Brit. Ind., pl. 233, 
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