AN ENUMERATION OP CULTIVATED PERNS. 



93 



tinnous, uniserial, on each side of the costa, ultimately con- 

 fluent, destitute of scales. 



1. L. decurrens, SI ; Fee, Mem. Acrost. t. 48, /. 1. Anapau- 



sia decurrens, Presl. Gymnopteris decurrens, /. Srn. 

 (olim) ; Hook. Gard. Ferns, t. 6. Ceylon and Ma- 

 layan Archipelago. 



2. L. axillaris, Kaulf. En. Fil t. 1, /. 10. Acrostichum 



axillare, Cav. Gymnopteris axillaris, Presl. East 

 Indies. 



21. PHYMATODES, Presl; J. 8m. 



Rhizome generally thick, short or much elongated, becoming 

 smooth. Fronds simple, pinnatifid or pinnate, smooth, coria- 

 ceous or membranous, segments adherent with the rachis. 



Genus 21. Portion of mature frond, under side. No. 2. 



Veins compound anastomosing, internal, obscure or evident; 

 primary veins generally undefined or evanescent. Receptacles 

 compital, generally deeply immersed. Sori round or oval, 

 large, transversely uniserial or irregular, naked. 



* Fronds simple or pinnatifid. 



1. P. pustulata, Presl. Polypodium pastulatum, Forst. 



Sdik. Fil. t. 10 ; Lowe's Ferns, 2, /. 8. Pleopeltis 

 pustulata, Moore. New Zealand. 



2. P. Billardieri, Presl. Polypodium Billardieri, R. Br. 



Pleopeltis Billardieri, Moore. Polypodium scandens, 

 Lalill. Nov. Holl. t. 240. Polypodium diversifolium, 



