CHARACTERS OF TRIBES AND GENERA. 193 



97. DRYOMENES, Fee (1851). 



/. Sin. Sot. Voy. of Herald, 1853 ; Poly podium sp. Hook. 

 Sp. Fil. 



Vernation sab-sarmentose, decumbent. Fronds con- 

 tiguous, simple, pinnatifid or pinnate, smooth, 1 to 3 feet 

 in height, sub-membraneous. Segments large, 1 foot long, 

 2 to 4 inches wide. Primary wms-costseform, transversely 

 combined, and compound anastomosing, with free veinlets 

 terminating in the areoles. Receptacles punctiform, com- 

 pital. Sori round, or by confluence unequal oblong, 

 oblique biserial or irregular, naked. 



Type. Polypodium plantagineum, Linn. 



Illust. Fee Gen. Fil., 1. 18, A ; Moore Ind. Fil., p. 35, A ; 

 J. Sm. Ferns, Brit, and For., fig. 61 . 



OBS. This genus was established by Fee upon the 

 Polypodium menisciicarpon of Blume, in which the sori are 

 generally oblong and curved, but such I consider to be an 

 abnormal form of punctiform sori ; I, therefore, in the 

 " Bot. Voy. of Herald," added a second pinnate species, as 

 also the Polypodium plantagineum of Linnaeus, all of which 

 agree in habit and venation, and in having naked sori, the 

 latter being the only character that separates them from 

 true Aspidium. 



Sp. D. plantaginea, /. Sm. (Linn. Jacq. Coll. 2, t. 3, 

 fig. 1)* (v v.) ; D. menisciicarpon, Fee; D. Purdiei, /. Sm. 

 Bot. Voy. Herald (Polypodium draconoptenun, Eat. Hook. 

 Sp. Fil.) 



The first and last species are natives of the West' Indies 

 and Tropical America, the second of Malay and Philippine 

 Islands. 



* See Podopeltis. 

 



