Gen. 2. — Oleandra, Cavanilles. Veins numerous, close, 

 parallel ; root creeping. 



Gen. 3. — Nephrodium, Schott. Lower veins arching. 



Nephrolepis, Schott is not represented in South Africa. 



Sect. 2. — Aspidiarice. Pr. Involucre round or elliptic; 

 entire. 



Gen. 1. — Polysticlunn. Schott. <So?7* round ; vehis simple 

 or forked ; fronds coriaceous. 



Gen. 2. — Cyrtommm. Pr. ^ori round; rem^ irregularly 

 reticulate. 



Gen. 3. — DidymocldcBna. Desvaux. Sori elliptic; sub- 

 immersed. 



Phanerophlebia., Pr., Cyclodium, Pr., Sagenia.,Pr., Fadyenia., 

 Hooker., Mesochlsena., Br., Aspidimn., Schott, Pleocncmia., Pr., 

 and Matonia., Br., are not represented in South Africa. 



TRIBE 3. 



AspleniacecB. Pr. Sori globose, oblong, or linear, on 

 back of veins. Involucre suborbiculate, or linear, lateral, 

 persistent, skinny ; free at margin opposite point of insertion. 

 Rhizome globose, seldom creeping. 



Sect. 1. Cystopteridece, Pr. Sori globose. Involucre 

 suborbiculate, becoming reflex and wrinkled. 



Gen. 1. — Cystopteris. Bernh. 'S'orz on middle ofveinlets. 



Acrophorus, Pr., Leucostegia, Pr., and Onoclea., Linn., are not 

 represented in South Africa. 



Sect. 2. Blechnacecs. Pr. Sori oblong, short, or linear 

 long. Involucre corresponding, flat. 



Gen. 1. — Athyrium, Roth. Sori oblong, short, curved, 

 on middle of veins. 



Gen. 2. — Blcclinum. L. Sori linear, contiguous or con- 

 fluent, on transverse veinlets uniting veins, parallel to rachis. 



Woodwardia, Sw., Doodia, Br., and Salpichla3na, I. Sm., are 

 not represented in South Africa. 



Sect, 3. Aspleniarice. Pr. Sori linear, long, in some 

 species (Cfcnopteris, Bernh., or Darea, Auct), marginal or 

 sunk in margin. Involucre corresponding, flat. 



Gen. 1. — Asplenium, L. Sori linear, long. Involucre 

 lateral on vein, 

 c 



