c. &ENEBA OP PEENS: 



on the anterior lower venules. Involucre firm membranaceous 



or sub-coriaceous, sessile, attaobed by a small point, globose, 



entire, at length bursting and splitting irregularly from the top. 



Veins simple forked or (in the secondary pinnules) pinnate; 



vemdes simple, free. 



Fronds decompound, herbaceous, Ehizome short, erect ? — 



The chief peculiarity in this genus is the hard globose entirely 



closed involucres, which at length burst open irregularly, and are 



affixed by a small point of contact. These characters separate it 



— not too definitely perhaps — ^from Wbodsia ; while from Fera- 



nema, on the other hand, it is distinguished by the sessile instead 



of stalked globose involucres. 



Ex.: D. aspidioides, Bl. | D. pseudo-cffinopteris, Kze. 



D. madagascariensis, JVe. | D. imerophylla (Cyathea, Mett.) 



141. (P) ARACHIQ'IODES, Shme, Mivm. PI. Jav. 241. 



Son involucrate, " roundish, scattered, inserted upon a slightly 

 elevated receptacle. Inmolnere aiaolmoid, covering the sorus," 

 (Bl.) 



" Involucre a cobweb-Hke substance, so tender as scarcely to 

 be called a membrane, covering each sorus." — Blume compares 

 his plant with Aspidimn as to habit, and with CJmoopTiora and 

 Trichopteris as to its fructification. Hooker associates it doubt- 

 fully with Diaealpe and Woodsia. 'Eie places it without doubt, 

 with Alsophila. We oaimot, from the evidence we possess, 

 form any decided opinion where it ought to be placed ; but we 

 may presume that it possibly belongs here, as Blume puts it in a 

 section — " indusia soris subjecta," and places it next to Biacalpe. 

 Ex. : A. aspicHoidefl, Bl. 



142. WOODSIA, U. Brown, Trams. Lm. Sob. xi. 173. 1. 11 ; 



(Woodia, Br. Prod. 158, in obs.) 



PKTSEMATnrMj Xaw^/iwa; Htkenoctstis, C.A.Meyer; HTMENOLiSNA, 

 C. A. Meyer; Pebrutia, Sboifcer; Poltpodii sp., j^wef. ; Abpisii sp,, 



AuH. ; AliSOPHILiE sp., Auct. ; DlCKBONIiB Bp., Auci. ; Ctstopteeidjb 

 aTp.t Atict.; LABTBEiB Bp,, Presl ; ACROBXICm sp.f Auct. ; Ceteeachis 

 sp,, Auct.; NoiHOOHL^lf,^ sp., Deevaux. 



Sari involucrate i.e. with inferior indusia, globose; the 



