390 GENERA OF FERNS. 
Fronds pinnate. Pinne entire, serrate, pinnatifid or pin- 
nate; fertile segments terminal, medial, or basial, or the en- 
lire frond is contracted and sporangiferous. 
Examp. 1. O. Javanica, Blume. (O. Presliana, J. Sm. in 
Journ. of Bot. Nephrodium banksiefolium and Nephrodium 
bromeliefolium, Presl, in Relig. Henk. Asplenium aureum, 
Blume. Reinw. Plenasium banksieefolium and bromelizefolium, 
Presi. Pterid. in Aspleniarie). 2. O. Vachellii, Hook. 3. O. 
Cinnamomea, Linn. 4. O. regalis, Linn. 5. O. Claytoniana, Linn. 
6. O. spectabilis, Willd. 
Jilust. Hook. gen. fil. t. 46. A. Schk. crypt. t. 144. 
Obs. It will be observed, by the synonomy of Osmunda 
Javanica, that more than one author has been led into a 
mistake with this species. Pres] elevates it into a new 
genus, which he ranks amongst the Aspleniarie. I have, at 
page 420 of vol. 3, and also at page 179 of vol. 4, of this 
Journal, already given my authorities for placing this plant 
in the genus Osmunda, 
138. Topea, Willd. 
(Osmundæ sp. Sw. R. Br.) 
Veins forked. Venules direct, free, sporangiferous. Spo- 
rangia definite, constituting oblong, simple or forked, naked, 
confluent sori. 
Fronds bipinnatifid. Pinne coriaceous, serrated, or mem- 
branous, pellucid and multifid. 
Species. 1. T. Africana, Willd. 9. T. rivularis, Sieb. (T. 
Australasica, A. Cunn.) 3. T. Fraseri, Hook. et Grev. 4- 
. T, pellucida, Carm. Hook. (T. hymenophylloides, A. Rich.) 
.. Jlilust. Hook. et Grev. ic. fil. t. 101. Hook. gen. fil. t. 46. B. 
Kunz. Analect. t. 4, : 
Obs. Todea is distinct from Osmunda, merely by its fronds 
being not at all, or only slightly, contracted, the sporangia pro- 
duced on evident venules. 
