46 THE WORLD OF THE SEA. 
fixed by a short pedicle to the side of a cavity (conceptacle), which 
opens to the surface of the plant by a little orifice (ostiole). 
CONCEPTACLE ENCLOSING THE SPORANGES, 
(Fucus vesiculosus.) 
The sporange contains, according to the species, one or more 
spores. . 
INSERTION OF THE SPORANGE, EMISSION OF THE OCTOSPORE. 
(Fucus vesiculosus.) 
The antherozoids are microscopic corpuscles .about the z,)5oth 
of an inch in length, enclosing a coloured granule which seems to 
