xlviii. GENEBA OF PEEKS: 



62. ASPLENIUM, Liwiaus, Gen. PI. 783. 



PHYLLITIS, Mcench; ONOPTBBIS, Necker; CJENOPTEBIS, Sergius; DABJEA, 

 Jussieu; ACEOPTEEIS, Link; AMESIUM, Newman; HOJIALONEUBON, 

 Klotszch; TABACHIA, Presl; BBACHYSOBUS, Presl; HTPOCHLAMTS, 

 Fie; DAB.SASTBUM, Fte ; ALLANTODLS sp., S. Brown; ATHTBII sp., 

 Auct.; POLTPODII sp., Aiict. ; ASPIDII sp., Auct. ; SCOIOPENDBII sp., 

 Roth; DIPLAZII sp., Auct. ; AcBOSTiCHi sp.,Linnau; BLECHNI sp., Auct. 



Sori indusiate, linear short or elongate, oblique ; the recepta- 

 cles lateral on the anterior side of the veins. Indmium linear 

 membranaceous, plane or fornicate. Veins simple or forked 

 from a central costa, (sometimes single and costseform in the 

 ultimate narrowly-cut segments) ; or forked from the base of the 

 segments, the costa being evanescent or wanting; venules parallel, 

 direct, free. 



Fronds coriaceous, herbaceous or membranaceous ; rarely 

 rachiform ; simple lobed pinnate or variously decompound j the 

 rachis or veins not rarely proliferous. Sori usually on the 

 anterior side of the venules, but often inverse in the basal 

 auricles, sometimes diplazioid. Ehizome short erect or de- 

 cumbent, sometimes stoloniferous. A very extensive and 

 varied genus, yet not presenting definite or sufficient characters 

 by which it might be broken up. The sections indicated below 

 are distinct enough in their typical species, but merge more or less 

 into each other through other species of intermediate character. 

 In the Euasplenium, Acropteris, and Darcea, the indusium is 

 flat, plane ; while in Allantodia it is arched or vaulted. 



Euaiplenium. Sori oblong or linear; veins simple or forked from a 

 costa, and divergent at a broad or obtusish angle ; or dimidiately-fur- 

 cate ; fronds usually 1- sometimes 2- 3- pinnate, or simple. 



Ex. : A. serratum, Lin. 

 A. marinum, Lin. 

 A. auricularium, Deiv. 

 A. lanceolatum, Hudt. 

 A. niteus, Sin. 

 A. dimidiatum, Willd. 



A.Hemionitis.Zin. (A.pahnatum,am.^ 



A. alatum, H. et B. 



A. elongatum, Sw. 



A. Petrarch*, DC. 



A. pseudo-nitidum, Raddi. 



. ps 

 he 



A heterocarpum, Wall. 



Aeropteris. Sori linear; veins flabellato-furcate without a costa; or 

 simple or forked, and diverging at_a very acute angle from an evan- 

 escent costa; fronds 1- 2- 3- pinnate. 



Ex. : A. cuneatum, Lam. I A. dimidatum, Sio. (A. zamisefolium 



A. laserpitiifolium, Lam. A. praemorsum, Su>. [Lodd.J 



A. septentrionale, Lin. \ A. Ruta-muraria, Lin. 



