THE TRUE MOSSES 



521 



Fig. 341, V. — Umbrella-liverwort. Archegonium (at the left) containing 

 an egg-cell (e) : and (at the right) the same, later, containing a young 

 sporophyte (sp). ^;*'- The neck (n) of the archegonium, and its base (v), 

 are shown in both; as also the protective curtain (p). (Atkinson.) 



.-^'^^ 





#^ 



Fig. 342.^Umbrella-livcrwort. Thallus (;) showing on the top seven 

 brood- cups containing minute brood-bodies; and below numerous 

 pseudo-roots. (Atkinson.) x 



