918 



Vni. CHARACE^. 



Tractiferons brancli 



Cftara fragUis. Portion 



of fructiferous branch, showing' 



the clQBcd antheridia (mn::.). 



Chifa fragilis. Portion of fructi- 

 ferous branchy showing the dehiscent 

 antheridium (mag.). 



Chara fragiVtar^ 



Ct fragilis. Top of siJoranginm, to 



show the corona formed of four n&n- 



chambfro-l protuberances (mag.). 



Mlella flexhhs. 



Chara. 



End of a chambered filament, 



of which each cell contains 



an antherozold (mag.)> 



R^ 



Chara fragilis. 

 Valve ol antheridium, showing the 

 central autheridifcrous cell (mag.)* 



Chara. 



Portion of joint, 



showing the cylia- 



dric inner cell, 



and its sheath 



formed of tubes. 



Cfiara fragilis^ germinating. 



