108 



SANDWICH ISLANDS. 



[Polypodiacea. 



1. Davallia Macrceana ; fronde pinnata, pinnis membranaceis glabris dimidiato-oblongis 

 obtusis basi oblique truncatis cuneato-attenuatis margine superiore crenatis dentibus sori- 

 feris, caudice longe repente. 



This beautiful Fern has been already alluded to by Dr. Greville and Dr. Hooker, when describing Da- 

 vallia Boryana, at tab. cxliii. of the Icones Filicum. To that species ours is veiy nearly allied, differing 

 principally in its more rigid frond, and in the upper margin of each pinnule, which, in D. Boryana, is irregu- 

 larly cut and crenate, with few sori. Here, the crenation is very regular, and each tooth has its sorus at a 

 certain distance from the margin, so that the fructifications form a line. 



2. Davallia remota; frondibus tripinnatis, pinnis inferioribus oppositis remotis superiori- 

 bus alternis caudatis, pimiulis inferioribus profunde pinnatifidis, mediis laciniisque cuneatis 

 subtrifidis, lacinulis truncatis subbifloris, raehi supra angulata, indusiis subrotundis. Kaulf 

 Enum. Fil. p. 223. 



Kaulfuss well observes that the lacinise are much broader than those of D. tenuifolia : this is the case, 

 especially if compared with the figure in Schkuhr, (tab. cxxviii. a., sub nom. D. venusta. ;) but our specimens 

 from the Mauritius, under the name of D. tenuifolia, and, we presume, the plant of Willdenow, are identical 

 with the present. 



3. Davallia hirta; frondibus tripinnatis, pinnulis ovatis obtusis superiore et antice sub- 

 incisis, laciniis dentatis, raclribus hirtis, indusiis intramarginalibus venisque subtus pilosis. 

 Kaulf. Enum. Fil. p. 223. — Dicksonia Kaulfussiana. Gaud, in Freyc. Voy. p. 368 ? 



1. Dicksonia flaccida. Siv. Syn. Fil. p. 137. Schkuhr, Fil. t. 129. 



1. Cibotium glaucum. — Cibotium Chamissoi. Kaulf. Enum. Fil. p. 230. t. 1. f 11, 

 {April, 1824.) — Pinonia splendens. Gaud, in Ann. des Sc. Nat. Dec. 1824, idem in Freyc. 

 Voy. p. 369. t. 21. — Dicksonia glauca. Sm. in Rees' Cycl. 



The genus Cibotium is thus defined by Kaulfuss : " Sori globosi submarginales contigui. Indusia car- 

 tilaginea globosa fornicata verticaliter oris callosis dehiscentia, bivalvia, valvula exteriori majori." To this, 

 besides his C. Chamissoi, Kaulfuss has referred the Dicksonia antarctica ; but to us the latter appears to 

 belong to the same author's genus Balantium, if that be really distinct from Cibotium. In Cibotium, the 

 involucre or indusium is a distinct substance from the margin of the frond : in Balantium, the outer valve 

 of the involucre is formed of the substance of the margin of the frond. — Mr. Menzies first detected this plant 

 in the Sandwich Islands, in the year 1787, and we have long been in possession of two states of it, 

 presented to us by that liberal Botanist : the one with longer and narrower pinnae, more deeply cut in a 

 pinnatifid manner, the lower segments distinct, forming separate pinnules, all very glaucous beneath ; — the 

 other with pinna; not at all glaucous, and more coriaceous in texture, not so deeply pinnatifid, and nowhere 

 are the pinnae again pinnated. Captain Beechey's Collection contains likewise two states, the first resem- 

 bling the glaucous variety of Mr. Menzies, but it is less glaucous ; the other not at all glaucous, larger in all 

 its parts, particularly in the sori, which are fewer on each lacinia, and more confined to the lower part of it, 

 while the pinna is pinuatifid, with broad, rounded lacinise, which do not extend half way to the rachis. 



1. Deparia pro/ifera. — D. Macrsei. Hook, et Grev. Ic. Fil. t. 154. — Dicksonia proli- 

 fera. Kaulf. Enum. Fil. p. 225. 



The following is the character of this genus: — Deparia, Hook, et Grev.; — Sori subglobosi in dentibus 

 ad margines irondis venulas termiuantes. Involucrum infra sorum iusertum, pateriforme, membranaceum, 

 margine sublaceratum. 



