AN ENUMEKATION OF CULTIVATED TEENS. 191 



18. P. aspercaulis, Wall. ; Lowe's Ferns, 4, t. 8. P. pecti- 



nata, Don, var. rubro-nervia. P. rubro-nervia, 

 Linden. East Indies. 



19. P. flabellata, Thunb. South Africa. 



20. P. arguta, Ait ; Lowe's Ferns, 3, t. 41. P. allosora, Link. 



P. palustris, Poir. Mongonia palustris, Presl. 

 Madeira. 



21. P. Kingiana, Endl. ; Lowe's Ferns, 3, t. 46. Norfolk 



Island. 



22. P. tremula, E. Br. ; Hook. Sp. Fil. 2, t. 120 B; Lowers 



Ferns, 3, t. 45. P. chrysocarpa, Link. Australia 

 and New Zealand. 



23. P. lata, Link ; Lowe's Ferns, 4, t. 6. Brazil. 



24. P. paleacea, Eoxb. in Beatson's Fl. of St. Helena, p. 349 ; 



Hook. Sp. Fil. 3, p. 186. St. Helena. 



ft Fronds tripartitely branched, deltoid, generally 

 qu adripinnate. 



25. P. deflexa, Link,Enum. Hort. Berol Tropical America. 

 26 P. decussata, /. 8m. Enum. Fil. Philipp. (1841). P. 



patens, Hook. Sp. Fil. 2, p. 177, t. 137. Ceylon, 

 Luzon. 



27. P.laciniata, Willd.; Presl, Pterid. t. 5,/. 23; Hook. Sp. 



Fil. 2, 1. 132 B. West Indies. 



28. P. Gheisbeghtii, J. Sm. Lonchitis Gheisbeghtii, Linden, 



Cat. Tropical America. 



*** Yernation uniserial, distant, sarmentose. 

 f Sarmentwm slender, epigceous. 



29. P. scaberula, A. Eich ; Hook. Sp. Fil. t. 93 A ; Lowe's 



Ferns, 4, 1. 10. New Zealand. 



ff Sarmentum thick, fleshy, hypogceous. 



30. P. aquilina, Linn.; Schk. Fil. t. 95 et 96; Eng. Bot. 



t. 1679 ; J&mtSZ. and Moore's Brit. Ferns, t. 44 ; 

 Sowerby's Ferns, t. 38; Hook. Brit. Ferns, 38 

 Tropical and Temperate Zones of both Hemispheres, 



