DIDTMOOHL^NE^. Ivii. 



(b) Veins connivently anastomosing. 



76. MESOCHL^NA, R. Brown, Fl. Jam. JBar.5. 



Sph^bostephaitos, J". Smith; Poltpodii sp., Wallich; SiEQlfO&BAU- 

 MATIS sp., Fee. 



Sori indusiate, oblong, parallel, oblique (hippocrepifonn, 

 Metten.J ; the receptacles medial, crest-formed, on the simple 

 Teius. Indusium membranaoeoue, rounded at the apex, truncate 

 at the base, attached longitudinally along the middle of the sorus, 

 the margins glandular, free. Veins simple from a central costa ; 

 the lower or more opposite pairs angularly connivent-anastomos- 

 ing (as in Nephrodium.) 



Fronds large, herbaceous, pinnato-pinnatifid, hairy. Ehizome 

 short, erect. Sori often crowded and becoming confluent, the 

 indusium then pushed up vertically between the spore-cases. — 

 This genus may be regarded as analogous to Stegnogra/mma, 

 diifering from it technically in being indusiate, the indusia being 

 double or centrally attached. 



Ex.; M. asplenioides, J. Sm. \ M.javanioas M.Br.MS; J. 8m. 



§ HEMIONITIBEiE, 



(a) Veins parallel, longitudinal, soarcelg reticulated. 



77. pnT.VT TPiTTTTTM, Desvaux, Ann. Soo. Lin. Par. vi. 218. 



AWTKOPHTI sp., 4-^et ; HeMIONITIDIS sp,, Auei, ; LOXOGEAMMATIS Sp., 



Preal; VlTTAElffl sp., Auct. 



Sori non-indusiate, narrow linear-elongate, immersed, parallel, 

 rarely anastomosed; the receptacles therefore scarcely reticu- 

 lated. Veins uniform, ecdstate, elongato-parallel, here and there 

 distantly reticulated, forming elongate linear areoles. 



Fronds simple, sub-coriaceous. Bhizome sub-globose. Sori 

 forming three four or more lines occupying nearly the length 

 of the frond. — The long parallel, scarcely reticulated sori distin- 

 guish this from Antrophyum, which it thus serves to connect 

 with the TcBniiidea. 



Ex. : P. lineatmn, J. Sm. | P. Grevillii (Antrophyum, Balf.j 



[AjrU, 1957.] p 



