918 



VEIL CHARACE^. 



Ckara rntffarig. 



Fructiferous branch 



(mag.). 



Chara fragilix. Portion 



of fructiferous branch, showing 



the closed nnthcridia (nm?.). 



C/iira frayilit. Portion of frticti- 



ferous brancli, showing the dehiscent 



antheridium (mag.)- 



Clara fragili*. 



C./ragitif, Top of apornngintn, to 



how the c >rona formed of four non- 



chamborod protuberances (mag.)- 



Nitella flrxilix. 



Chara. 



End of a chambered filament, 



of which each cell contains 



an antherozoid (mag.). 



Chara fragilit. 



Valve of antheridinm, showing the 

 central antlieridifcrons cell (mag.). 



Chara. 



Portion of joint, 



showing the cylin- 



dric inner cell, 



and iu sheath 



formed of tubes. 



Chara frayilu, germinating. 



