TAB. XX XIX -XL. 
Diplazium (Oxygonium) elegans. 
F rondibus simplicibus y. pinnatis, pinnis lato-lanceolatis 
sessilibus anguste acuminatis serratis, lateralibus 2-9 sub- 
oppositis intermedia vix majore nunc basi hastato-biloba, 
involucris plurimis elongatis angustis, venis hie illic ple- 
rumque marginem versus anastomosantibus, stipitibus 
glabris nudis basi solummodo parce squamosis. 
Oxygonium elegans, J. Smith , in Hook. Journ. of Bot. 4. 
p. 178. (name only). 
Callipteris elegans, in Hook. Journ. Bot. 3. p. 409. Fee. Gen. 
Fit. p. 219. 
Anisogonium elegans, Brest , Epimel. Bot. p. 293. 
A. grossum, Presl , Epimel. Bot. p. 293. forma grandis, ( name 
only , sub A. elegante). 
Hab. Luzon, Cuming , n. 276, and at Leyte, n, 30 5. (larger 
form.) 
I cannot but think that Mr. John Smith is correct in 
removing this to Oxygonium of Presl, rather than retaining it in 
Callipteris as M. F ee has done, though it has a stronger claim 
to a place there than our Diplazium cordifolium has ; yet the 
venation of the present plant is not that of Callipteris prolifer a , 
the original species, where all the lateral veinlets of a fascicle 
combine with the adjacent ones, and form as it were a se- 
condary vein, parallel with the main vein. Here the union 
of the long parallel veinlets is comparatively rare, as shown in 
our figure 1. It is unquestionably a Fern closely allied to 
our Diplazium cordifolium , (see Tab. 36), and even more 
liable to vary, from a simple entire frond to pinnated with 
seven or eight pinnae; but these pinnae are always serrated, 
narrower, and the ultimate pinna nearly uniform with the 
others, and the venation is more simple. Our large state of 
the plant Mr. Presl seems to have made a distinct species, 
(under the name of grossum), but we find all intermediate 
gradations in our own or Mr. Smith’s Herbarium. Nearly allied 
to the large state of this is the pinnated form of Diplazium 
alismeefolium , Presl, of which the simple fronded form is 
figured in the Reliq. Haenk. t. 8. f. 3. ( Cuming . n. 116); but 
that has larger dark coloured fronds, with copious, coarse, 
black scales on the stipites and rachis, and venation as in our 
Dipl , cordifolium. Of this, however, Presl has made the 
Genus Ochlogramma (Epimel. Bot. p. 93), and Fee the Genus 
Pteriglyphis 3 Fee, Gen. Fil. p. 219. t. 18. B. : — each author 
giving a new and different specific name. 
Fig. 1. Portion of a fertile pinna, seen from beneath: — 
magnified.. 
