AN ENUMERATION OP CULTIVATED FERNS. 147 



&. Indusium calyciform. 

 72. HYPODEBBIS, E. Br. 



Vernation uniserial, subsarmentose. Fronds simple, entire 

 or trilobed, 1-2 feet long. Primary veins costaeform ; venules 

 compound anastomosing. Receptacles punctiform, compital, 



Genus 72. Portion of mature frond, under side. No. 1. 



included within a calyciform, obscure, membranous indusium. 



Sori round, irregular or oblique, biserial between the primary veins. 



1. H. Brownii, /. 8m. ; Hook. Gen. Fil. t. 1 ; Hook. Gard. 

 Ferns, t. 24; Lowe's Ferns, 7, t. 14. Woodsia 

 Brownii, Metten. Trinidad and Guiana. 



73. TBICHIOCARPA, Hook. 

 Vernation fasciculate, decumbent. Fronds bi-tripinnatifid, 



Genus 73. Portion of pinna, fertile frond, under side. No. 

 L 2 



