AN ENUMiiEATION OP CULTIVATED PIKNS. 281 



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

 tacles in two longitudinal series, bearing cellular vesicles of 



Genus 161.— Plant with spore-ca^es, natural size. No, 1. 



two kinds — 1. {Antheridangia), containing numerous small 

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



1. M. quadrifolia, Litm. ; Willd. 8p. PI. 5, p. 538 ; Schh. 



Crypt. 1. 173. — Germany. 



2. M. mficropus, Hooh. Ic. PI. t. 909 ; Gmrd. Ferns, t. 63 ; 



Seemcmn, Joum. Bot. 1, p. 6. (The Nardoo plant of 

 Australian explorers.) — Australia. 



