UNDERWOOD: REVIEW OF THE GENERA OF FERNS 281 
NiPHoBOLUS Kaulf., 1824 = Cyclophorus. 
Notholaena R. Br., 1810 (JV. distans). 
CincinaLis Desv., 1811 (C. ferruginea). 
ODONTOPTERIS Bernh., 1800 = Lygodium. 
Oetosis Neck., 1790 (no type). 
OLEANDRA Cav., 1802 = Aspidium. 
Olfersia Raddi, 1819 (0. corcovadensis !). 
Onoclea L., 1753 (O. sensibilis !). 
Ancient Adans., 1763, not Hoffm. 
CarvPTERIUM Bernh., 1802 (Onoclea sensibilis). 
RiEDrLEA Mirb., aes (R. sensibilis). 
Onopteris Neck., 1790 (no type). 
Onychium Kaulf., 1820 (no type). 
Onychium Kaulf., 1824 (O. auratum). 
Onycuium Reinw., 1825 = Lecanopteris. 
Oriara Desv., 1827 = Helminthostachys. 
Ophioglossum L., 1753 (O. vulgatum). 
Ophiopteris Reinw., 1825 (O. verticillata); referred by Moore to 
` Oleandra. 
Ornithopteris Bernh., 1806 (Osmunda hirsuta). 
Osmunda L., 1753 (0. regalis). 
STRUTHOPTERIS Bernh., 1801 (Osmunda regalis); not Stru- 
thiopteris Scopoli, nor Willd. 
APHYLLOCALPA Cav., 1802 (Osmunda regalis). 
Paragramma Blume, 1828 = sect. Grammitis Swz. 
PARKERIA Hook., 1825 = Ceratopteris. 
Peranema Hamilton, 1825 (P. cyatheoiqes). 
PnronoroBus Desv., 1827 = Cryptogramma. 
Phyllitis Ludwig, 1757 (P. Scolopendrium). 
ScoLoPENDRIUM Adans., 1763. 
PuyseMatium Kaulf., 1829 = Woodsia. 
Pinonia Gaud., 1824 = Cibotium. 
Pratycerium Desv., 1827 = Alcicornum. 
Platyzoma R. Br., 1810 (P. microphyllum). 
Pleopeltis H. & B., 1810 (P. angusta). 
Pleurogramma Blume, 1828 (Taenitis linearis Kaulf.). 
PoEcILoPTERIS Presl. = Poikilopteris. 
Poikilopteris Esch., 1827 (Acrostichum scandens Raddi.) 
