1. OEySBl on 7EBNS: 



* • Vein! parallel transversely combined ly a marginal vein. 



64. THAMNOPTEEIS, Fresl, Tent. Pterid. 105 (§) j Id. 



Epim. Bot. 68. 

 Nbottoptbbis, J. Smith ; AsPLEjrn sp., Attci. 



8ori indasiate, linear elongate, parallel, obliqne; the receptacles 

 lateral, anterior. Indusium narrow linear, membranaceous, plane. 

 Veins simple or forked from a central costs ; venules approximate, 

 parallel, iJhited at their apices by a continuous slightly arcuate 

 marginal rein. 



Fronds simple, coriaceous, often robust. Bhizome short, 



thick, erect. — ^A well-marled group, characterised by having a 



aub-marginal vein uniting the apices of the oblique reins, and by 



the long narrow crowded sori. 



Ex. : T. Nidns, Fred. | T. stipitata, Tresl. 



T. Phyllitidis, Fresl. T. Simousiana (Asplenimn, Sh.J 



T. mussfolia, Fred. \ T. Grevillii (Asplenium, Wall.J 



* • * Veins reHculated, thei/r apices combined by a marginal vein., 



65. HiEMIDICTTUM, Presl, Tent. Fterid. 110. 



AspLENiDicTTON, J. Smith ; Abplshii sp., Auct. ; Tarachia sp., Fred ; 

 Dlplazii sp., Hvrt. 



Sori iudusiate, linear elongate, parallel, oblique ; the recep- 

 tacles lateral anterior. Indusium narrow, membranaceous, plane. 

 Veins simple or forked from a central costa ; venules parallel at 

 the base, reticulated towards the margin, forming trapezoid or 

 elongated areoles, their apices areuately combined, or cotinected 

 by a continuous straight marginal veinlet. 



Fronds coriaceous or thin herbaceous, pinnate, sometimes 

 large. Rhizome thick, erect. — The typical species is a large fern 

 with fronds of delicate texture. Both groups have the veins 

 parallel and distinct near the costa, and reticulated near the 

 margin ; the one having, and the other wanting a straight mar- 

 ginal vein. 



§ Sasmidiciyum. — Marginal comiecting veinlet straight. 

 Ex. : H. marginatum, Freal. 



§ AepUnidictywm.—Mai^ssi veinlets areuately connected. 

 Ex. ; H.Pardieanmn(Asplemam,ff4:.^| H. rinla7Sonianiim(Asplemnm, WaU.) 



