Photoinici-diiraphs of Bntaiiical Studies. 



11. — ^V.S. Sporangia of Marchantia polymorpha. 



«=«;^SfS 







hi- 





Upper portion of stel- 

 late disc of thallus. 



Fibrous liundle. 

 ArcheLSonia 



(Unfurtilisfd) 



I Sporogonium, with 

 i spores and elaters. 

 Stalk of stellate disc. 



12.— Fruiting Fronds, of " Chara sp." 



Leaves. 



Oogonium 

 Antheridium. 



