Fig. 138. 
Alsophila Australis. 
R. Brown, prodromus floras Novas Hollandias 158 (1810). 
1, sterile segment; 2, two fertile segments; 3, portion of segment with 
sorus ; 4, vertical section of sorus ; 5, spore-case; 6, spores ; all enlarged, 
but in various degrees. 
