UNDERWOOD: REVIEW OF THE GENERA OF FERNS 
TecGuLariA Hornsch., 1825 = Didymochlaena. 
TrrEozoMa R. Br., 1823 = Ceratopteris. 
THELYPTERIS Adans., 1763 = Pteris. 
Trichomanes L., 1753 (T. crispum). 
Pyxiparia Gled., 1764 (no type). 
AcHOMANES Neck., 1790 (no type). 
DripvwocLossuM Desv., 1827 (Trichomanes muscoides). 
TRICHIPTERIS Presl, 1829 = Alsophila. 
Todea Willd., 1802 (Acrostichum barbatum). 
Ucena Cav., 1801 = Lygodium. 
Vittaria J. E. Smith, 1793 (Pteris lineata L.). 
VALLIFILIX Aud. de Petit Thouars, 1811 = Lygodium. 
Wisetia Bernh., 1801 = Hymenophyllum. 
Woodsia R. Br., 1810 * (W. Z/vensis). 
PHYSEMATIUM Kaulf., 1829 (P. molle). 
Woodwardia J. E. Smith, 1793 (Acrostichum areolatum L.). 
Xiphopteris Kaulf., 1820 ! (Grammitis serrulata). 
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* The name usually quoted 181 3 really dates from 1810 when it was proposed as 
Woodia. 
