*, 



OEKEEA OP FEBNS : 



Sort indusiate, marginal, linear, continuous ; the receptaclet 

 linear transverse, uniting the apices of the veins. Indusium of 

 the same form, membranaceous. Veins simple or forked from a 

 central costa, uniformly reticulated, evident or obscure, the 

 hexagonal simple areoles universal ; or, rarely, the basal portion 

 of the veins parallel. 



Fronds herbaceous or coriaceous, simple pedate palmate pin- 

 nate or bi-tri-piunate. Ehizome short, erect or creeping. We 

 have not considered the venation of the Seterophlebia as suffi- 

 ciently different from that which is typical of this genus to 

 necessitate its removal ; and assuredly that of the Doryopteris 

 is not. 



Heterophlebia. Veins evident, parallel below, closely reticulated near 



the margin. 



Ex.: L. grandifolia, J. Sm. 

 Eulitobrochia Veins evident, uniformly reticulated. 



Ex. : L. denticulata, Presl. \ L. Beecheyana (Pteris, AgardhJ 



L. splendens, Presl. L. vespertilionis, Presl. 



L. comans, Presl. \ L. macroptera, J. Sm. 



Doryopteris. Veins obscure, uniformly reticulated. 

 Ex. : L. sagittsefolia, Presl. 



L. pedata, Presl. 



L. dura (Pteris, WilldJ 



L. hederacea, Presl. 

 L. palmata, Presl. 

 L. articulata, Preil; 



(d) Veins compoundly reticulated, with included free veinlets. 



66. AMPHIBLESTRA, Presl, Tent. Pier. 150. 

 PTBEIDIS sp., Auct. 



Sori indusiate, marginal, linear, continuous or interrupted ; 

 the receptacles linear, uniting the marginal veinlets. Tnditsium 

 narrow, membranaceous. Veins pinnate from a central costa, 

 prominent ; venules compoundly anastomosing, forming trans- 

 versely arcuate primary areoles, and irregular sub-hexagonal 

 secondary ones; and having variously directed straight or in- 

 curved free included veinlets. 



Fronds ample, membranaceous, tripartite. Ehizome short 

 erect? A large pteroid fern, with the compound anastomosing 

 venation and aspect of true Aspidium. 



Ex.: A. latifolia, Presl. 



