104 CHARACTEES OF TRIBES AND GENERA. 



inches long ; the sori large, oblong, parallel with and in a 

 row on each side of the mid-rib. I have not had the 

 opportunity of examining this Fern, and therefore place it 

 here on the supposition that the vernation is articulate. 

 In the " Species Filicum," P. terminates, P. peltedia, and 

 P. longipes, are united under the original name of Poly- 

 podium PJiymatodes, but having observed them for many 

 years under cultivation, I have been led to consider 

 them to be as good species as many others described in the 

 " Species Filicum." 



19. PHTMATOPSIS, J. Sm. 

 Polypodium sp., auct. ; Hook. Sp. Fil. 



Surculum slender, elongating. Fronds simple, pinnatifid, 

 or sub-pinnate, 6 to 12 inches in height, smooth, sub- 

 coriaceous. Primary veins evident, costaeform, terminating 

 at or near the margin, which is thickened, and with a 

 notch between each two veins. Venules compound, anasto- 

 mosing. Receptacles compital, punctiform, superficial, one 

 between each two primary veins. Sori tranverse, uni- 

 serial, naked. 



Type. Polypodium palmatum, Plume. 



Illust. Blume, Fl. Java, t. 64. ; Hook. Ic. PI., t. 951. 



OBS. In general habit the species of this genus are 

 similar to Phymatodes, but the well-defined costaeform 

 veins, thickened and notched margin, marks them as 

 being worthy of being adopted as a distinct group ; it 

 consists of about a dozen species, all natives of India, 

 Malay, and other tropical islands. 



* Fronds simple. 



P. accedens (Bl.) ; P. oodes (Kze.) ; P. rostrata (Hook.) ; 

 P. rhynchophylla (Hook.) P. Griffithiana (Hook.) 



