54 OUR NATIVE FERNS AND THEIR ALLIES. 



GYMN08PERM* 



SELAGINELLACE/E 



ISOETACE/t 



POLYPODIACE* 



SPHAGNACE/t 



PHYCOMYCETES 



BROTOCOCCOJDE/E 



PROVISIONAL PEDIGREE OF THE LEADING GROUPS OF PLANTS. 



