AN ENUMERATION OF CULTIVATED FEKNS. 281 



on the footstalk, 2-valved, containing numerous obovate recep- 

 tacles in two longitudiual series, bearing cellular vesicles of 



Genus l6l. Plant with spore-cases, natural size. No. 1. 



two kinds 1. (Antheridangid), containing numerous small 

 spores ; 2. (Oophoridangia), containing a single large spore. 



1. M. quadrifolia, Linn. ; Willd. Sp. PI 5, p. 538 ; Sells. 



Crypt. 1. 173. Germany. 



2. M. macropus, Hook. Ic. PI. t. 909 ; Gard. Ferns, t. 63 ; 



Seemann, Journ. Bot. 1, p. 6. (The Nardoo plant of 

 Australian explorers.) Australia. 



