having forked naked linear sori are referred to Qymnogramma, 

 though all the sori may not be forked. 



Eudiplazium. Sori linear ; indusium plane. 

 Ex. : D. lanceum, Presl. I D. grandifolium, Sw. 



D. plantagineum, Sw. \ D. celtidifolium, Eze. 



D. Hilsenbergianum, Presl (Anisogonium sylvaticum, Hook.) 

 D. grammitoides, Presl. \ D. arborescens, Sw. 



D. deltoideum, Presl. \ D. striatum, Presl. 



D. Klotzschii (Lotzea diplazioides, SI. et Karst.J 



Didymochlamys.Sori short oblong, sub-basal ; indusium fornicate. 

 Ex.: D. tumulosum (linden 503; I D. athyrioides (D. brevisorum, J. Sm.. 

 Caraccas) | Kew Ferns, non En. Fil. Phil.) 



* * Veins conniventty anastomosing. 

 73. CALLIPTERIS, JBory, Voy. i. 282. 



AirisoGOiaiTM, Presl; DIGBAMMABIA, Hooker, (non Presl); MICBOS- 

 TEGIA, Presl ; AspLEifii sp., Auct.; DIPLAZII, sp., Auct. ; OXYGONH sp., 

 J. Smith. 



Sori and receptacles as in Diplazium. Indusium narrow, plane, 

 membranaceous, diplazioid. Veins forked or pinnate from a 

 central costa ; venules anastomosing irregularly at an acute angle, 

 or each opposite pair uniting between the primary veins in super- 

 posed acute sub-triangular areoles; the marginal or superior 

 veinlets free. 



Fronds herbaceous or coriaceous, pinnatifid pinnate or bi-tri- 

 pinnate, sometimes proliferous. Khizome short erect. Large 

 growing ferns, distinguished from Diplazium by the anasto- 

 mosing veins, which are analogus to those of NepTvrodium and 

 Goniopteris. 



Anisogonium. Venules sparingly acutely anastomosing. 



Ex. : C. ambigua (Asplenium, Sw ,) 



C.esc 



ibigua (Aspleniu 

 lulenta, J. Sm. 



C. elegans, J. Sm. 

 C. sylvatica, Sory. 



Callipteris. Veins angularly anastomosing in superposed pairs. 

 Ex. : C. prolifera, Sory. \ C. undulosa, Presl. 



*** Veins reticulated. 

 74. OXYGOWIUM, Presl, Tent. Pterid. 117. 



PTEBIGLTPHIS, Fee; OCHLOGBAMMA, Presl; DIPLAZII sp., Auct.; As- 

 PLEBII sp., Auct. ; CALUPTEBIDIS sp., J. Smith ; AifisoGONii sp., Preel. 



Sori indusiate, linear elongate, usually double, and together 



