P L Y P D I A C E M. ;Q3 



into a finely serrulate barren point ; the margin of the fertile portion 

 revolute and crenate ; the base unequal, its superior half truncate, the 

 inferior with a small round lobe. Indusium narrow, membranaceous, 

 straio-coloured. 



This is closely related to the preceding species ; but is readily dis- 

 tinguished by the narrower pinnae, as well as the more slender and 

 scabrous stipe and rhachis. 



5. Pteris pellucida, Presl? 



Pteris pellucida , Presl? ex Agardh, Gen. Pterid. p. 10. 



Hab. Mountains, near Banos, Luzon, Philippine Islands. 



This has slender and naked stipes, and smooth pellucid fronds, 

 which are either ternate or pinnate. Pinnae opposite, ascending, 

 sessile, elongated-lanceolate, and acuminate, the point crenate, and the 

 base somewhat wedge-shaped ; about two-thirds of the margin on the 

 upper portion is fertile and contracted. We doubt whether this is 

 specifically distinct from the Pteris stenophylla of Hooker and Gre- 

 ville's Icones Filicum, t. 130. 



# * * Frondes simplices pinnatijidai (pinnis infer ioribus divisis). 



6. Pteris Cretica, Linn. 



Pteris Cretica, Willd. Spec. PL 5, p. 374; Blume, Enum. Plant. Jav. p. 209; 

 Agardh, Gen. Pterid. p. 9. 



Hab. Kaala Mountains, Oahu, Sandwich Islands ; rare. 



This coincides so w T ell with the species quoted, that we do not think 

 it can with propriety be separated from it. 



7. Pteris umbrosa, E. Br. 



P. stijpite scabro semitereti hinc trisulcato atro-brunneo ; fronclibus pin- 



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