304 



I'LAXT STUDIES 



IDS. The antheridium. — The male orgun of the Br^yophytes 

 is called an antheridium, just as among Thalloi^hytes, but 

 it has a very diflt'oreut structure. In general among the 



iSri^^ftjSffe . 



;. 277- Sox ovL^aiiH of a coTiinioii inosw iFi'iuiria): thr ^Toiip to the ri^ht represents 

 an aiiDieridinin ^A) iliscliarLnii^ IVnin its a|iex a mass iit s[)erni inntlier cells {a), a 

 siiiL^'le rtinlhcr cell wjili its spcriii (/vi, and a single spcTin (c). showin;;; body and 

 two cilia; llie Lrroiip to the left rcprcsctils an arclicL^onial cluster at summit of 

 stem (.1), shiiwiim archeL;onia in), and paraplivscs and leaf seclions (/;!. and also a 

 sin!.'li- arclic^oninm (/;), nilh vcTiler {/,) cc.ntaininu c^'l; and ventral canal ci'll, and 

 tieek (//) ennlainni^' tin- disor^'aniznii^ axial row luce l< canal celisi.— After SACiiS. 



Tlitillophytes it is a single cell (mother cell), and may be 

 called a simple antheridium, but in the Bryopiiytes it is a 

 mtmy-celled orgtiii, tiiid may he rega.rded as ;i ct)mpound 

 antheridium. it is usually a sltdked, club-sliaped, or ovtil to 



