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Figs. 1 7. Onocela inquirenda (Hollick) n. comb . _ _ 32 



8. Gleiohenia protogiea Deb. and Etts. '( 31 



9. Gleiche.nia gracilis Heer? - 31 



10-13. Tbyrsopteris grevillioides (Heer) n. comb . — 31 



14-1 S. Marsilea Andersoni Hollick 33 



19—21. Marsilea Holtingiana Scbaff. (introduced for comparison) 33 



22. Sagenopteris variabilis (Vel.) Vel. ? 34 



132 



