linear, opening along the inward side. Veins (sterile) : simple 

 or forked from a central oosta; venules direct, free, thickened 

 at the apex; in the fertile fronds combined near the base or 

 within the margin by the receptacle. 



Fronds simple pinnatifid or pinnate; the fertile sometimes 

 more or less contracted. Ehizome short, erect, or producing 

 elongated creeping stolones. This genus is only intelligibly dis- 

 tinguished from Lomaria by including in it all those species 

 in which the indusia and sori are evidently intramarginal, irre- 

 spective of the contraction of the fronds. 



Eublechnum. Sori costal or sub-costal. 

 Ex. : B. brasiliense, Desv. I B. occidentals, Lin. 



B. orientate, Lin. B. Finlaysonianum, Wall, 



B. lanceola, Sic. \ B. intermedium, Lk. 



Parablechnum. Son sub-marginal by the contraction of the fronds. 



Ex. : B. Spicant, Smith. 

 B. GiUiesii, Mett. 



B. hastatum, Klfs. 

 B. punctulatum, Sw. 



(b) Veins transversely or arcyately combined. 



20. SALPICHIISJNA, J. Smith, HJc. Journ. Sot. iv. 186. 

 SALPIGL^NA, Klotzaeh ; SALPINCHL.SKA, Prel ; BLECHNI sp., Auct. 



Sori indusiate, linear, continuous, on a transverse receptacle, 

 approximate to the costa. Indusium broad, membranaceous, in- 

 volutely-cylindraceous, the opposite valves joined over the costa; 

 at length opening along the centre. Veins forked from a central 

 costa ; venules parallel, combined at the apex by a slight intra- 

 marginal veinlet, and near the base, (in the fertile fronds) by the 

 receptacle. 



Fronds bi- pinnate, scandent. Ehizome as in Blechnum ? Very 

 little different from Slechnum, except in the scandent habit and 

 combined venules. There appears to be but one species. 



Ex. : S. volubilis, J. Smith. 



21. SADLEBIA, Kaulfuss, Enum. Ml. 161. 

 BLBCHNI sp., Gaudichaud : WOODWABDLS sp., Metteniug. 



Sori linear, indusiate, continuous ; on an elevated cristseform 

 transverse central receptacle. Indusium narrow, sub-coriaceous. 



C3 



