( 19 ) 



17. PTERIS, Linn. 



1. PTERIS PEDATA, Linn. 



2. P GRANDIFOLIA, Linn. 



3. P LONGIFOLA, Linn. 



4. P CPvETICA, Linn. 



5. P HETEROPHYLLA, Linn. 



6. P MUTILATA, Linn. 



7. P aUADRIAURITA, Retz. 



VAR. FELOSMA, J. Smith. 



VAR. AFFLXJENTUS, Jenman. 



8. P SWARTZIANA, Agardth. 



9. P BIAURITA, Linn. 



10. P INCISA, Thunbg. 



11. P DEFLEXA, Link. 



12. P LACINIATA, WilM. 



13. P ACTTLEATA, Swartz. 



14. P KUNZEANA, Agardh. 



15. P PODOPHYLLA, Swartz. 



16. P GIGANTEA, Willd. 



17. P VISCOSA, Moore. 



