HZ 



DIOKSONIEiE. 



* * Indasium distinctly two-valved. 



CIBOTIUM. Kaulfuss, Berl. Jahrb. der Ph. (1820) Id. Enum. FiL 229. 1 1. 



(Pinonia, Gaudichaud ; — Hiatea, Menzies M. S. f (Hook. Sp. Fil.) — Dicksonia, Sp. A act. ; — Balantii, Sp. Auct. ; — Aspidii, Sp. 

 Auct. ; — Polypodii, Sp. Auct.) 



Sort involucrately-indusiate, sub-globose, marginal, reflexed ; the receptacles slightly elevated, terminal Indasium two-valved, 

 coriaceous, distinct from the substance of the frond ; the outer valve larger cucullate, the inner operculiform. Veins forked or pinnate 

 from a central costa ; venules free. 



Fronds large, decompound ; Rhizome thick, short decumbent, or erect. This genus, like Dicksonia, has two-valved iudusia ; 

 the texture of the two valves is alike and evidently different from that of the frond, on the extreme margin of which they are borne. (Moore.) 



OlBOTIUM GLAUCUM. (Hook, and Arnt.) Fronds bipinnate, glabrous and shining on the upper side, glaucous beneath, 

 with occasionally a few hairs on the rachis, pinnules deeply pinnatifid, lanceolate, acuminate 4-5 in. long, the upper ones diminishing 

 and tapering into a pinnatifid apex, lobes or segments numerous, more or less falcate, veins simple or forked, indusia very prominent 

 and coriaceous, usually 2 to 4 on each margin of each lobe or sometimes only 1 on each side at the base, valves concave, very nearly 

 equal or the inner one rather narrower. Benth. Fl Hongkong, p, 460. Booh Sp. Fil. i. 82 ;— C. glaucescens Kunze. Booh Sp. Fit. 

 i. 82 ;— C. Assamicum. Booh I c. i. 83. fc 29. /3. 



The specimen figured is from Assam. 



Hab. Assam, Hongkong, S. China, Sandwich Islands. 



PLATE No. LXXXIII. 



