49^ SMITHSONIAN MISCICIJ.ANKOUS COLI.ICCTIONS VOL.52- 



EXPLANATION OF PLATES 



Plate LXIII 



Figs, i, 2. Woodwardia cokimbiana, sp. nov 491 



Fig. 3. Woodwardia Maxoni, sp. nov 489 



Fig. 4. Dennstsedtia americana, nom. nov 492 



Plate LXIV 



Figs, i, 2. Woodwardia Maxoni, sp. nov 489 



Fig. 3. Dennstaedtia americana, nom. nov 492 



Figs. 3a, 3b. Enlarged pinnules of Fig. 3x2 492- 



FiGS. 4, 5. Dennstaedtia americana, nom. nov 492- 



