72 



ASPLENIEiE. 



HEMIDICTYUM. (Presl Tent. Pterid. 110/ 



(Asplenidictyon, J. Smith ; Asplenii Sp., Auct. ; Tarachia Sp., Presl. ; Diplazii Sp., Hort.) 



Sori indusiate, linear elongate, parallel, oblique ; the receptacles 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, the apices arcuately combined, or connected by a continuous straight marginal veinlet. 



Fronds coriaceous or thin herbaceous, pinnate, sometimes large. Rhizome thick erect — (Moore). 



HEMIDICTYUM FlNDLAYSONIANUM. (Wall). Caudex erect stout woody scaly at the summit rooting below, stipites 

 and rachis compressed deciduously scaly below, fronds 1-1 J foot long coriaceous (brownish-green when dry) oblong pinnate, pinnae remot 

 5, 16 or 17, erecto-patent inequilaterally and subfalcately ovato-lanceolate long acuminate entire or sinuato-subangulate subaurlculata 

 unequally cuneate at the base and gradually attenuated into the petiole scarcely costate, terminal one subrhomboid unequally 3-lobed, 

 veins subflabellate diverging from an indistinct costa dichotomous free below anastomosing towards the margin into very elongated 

 subhexagonal areoles, terminal veinlets free or rarely combined in arches at the margin, sori linear elongated but varying much in length, 

 originating at the centre but never extending to the margin, involucres narrow.— Hook Sp. Fil. iii. 271.— Wall. Gat. n. 191.— flboi. Ic, 

 Plant, t. 937 ; (veinlets too copiously arched at the margin) ;— A. integerrimum, Wall. Ms.— Hook et Grev. Ic. Fil. t 136 ; inaccurate 

 in the venation) ;— Hemidictyum Finlaysonianum, Moore Ind. Fil p. 1 ;— H. Hookerianum, Moore Ind, Fil. p, 130 ; who WQtto A. 

 Hookerianum, Wall. Cat. n % 2,682.) 



The specimen figured is from the Khasya Hills, (Dr. Thomson). 



Hab. Penang, Mishmee, Sikkim, Khasya, Assam, Nepaul, Kumaon, 



PLATE No. LXXII, 



