IxEXlT. GEITEEA OP FEKNS : 



nEil on the venules. Indusium orbicnlaT} peltate. "Veins pinnato- 

 furcate or simply forced, &om a central costa ; venules free ; tlie 

 lower anterior one usually, sometimes more, fertile. 



Fronds simple pinnate or bi-tri-pinnate, rigid, coriaceous, tbe 

 margins usually mucronato-serrate. Bbizome short, thick, erect. 

 — An extensive genus, very well marked by technical characters. 

 Probably Cyclopettis should be included. The original PoU/iti- 

 chum of Koth, Aspidium of Swartz, and Tectaria of Cavanilles, 

 were all proposed about the same date, and intended to separate 

 the indusiate species at that time referred to Polj/podium, &om 

 among the typical non-indusiate group. In the disposition of 

 the two former of these names, long since made by Schott and 

 adopted by Presl, we entirely concur ; but it is to be regretted 

 that either the expressive name of Cavanilles, or the still older 

 synonym of Adanson, was not used by Presl, instead of the 

 more modem inexpressive one of Bory, for the group now known 

 as Lastrea. The latter name having been, however, employed so 

 long ago in the arrangements both of Presl, and J. Smith, on 

 which modem views of classification are mainly based, and the 

 group being so extensive that the substitution of another generic 

 name would involve multitudinous changes, it is doubtless better 

 now to acquiesce in PresVs nomenclature, both as to the appli- 

 cation of Lastrea to the &ee-veined reniform AspidietB, and of 

 Nephroiiwin to those having anastomosing veins. 



§ MypopeUit. — ^Piims and pumnles continaoTis nitli the rachia. 

 P. mncronatam, JPretl. 



Ex. : P. Lonchitis, Solh. 



P. acrosticlioides, Sciatt. 

 F. acaleatam, Scth, 

 P. obtosmn, tT. Sm. 

 P. coriacenm, Schott. 



P. pnngens, Fresl. 



P. nexQin, PhiUppi. 



P. multifidmn (Aspidillin, MettJ 



P. Btenopteris (Aspidimn, Kze.J 



§ CtfclopeltU. — Pinnffi articulated. 

 Ex. : F.fiemicordatain(Cyclop.J'.5fli.) | P. Presliana (Cyclopteris, J. Sm.) 



(c) Indusium reniform, affixed at the sinus. 

 * Veins reticulated. 



118. PADYENIA, Sooker, Gen.IHl. t. 53. (non Endl.) 



AspLEirn sp., Auct.; Aspiun sp.fAuct.; Poitstichi Bp., Auci. 

 Sari indusiate, oblong -rotandate, large, uniserial on each side 



