_ 21 - MOSS. 



44. Sexual Reproduction. Cut off the apex of a moss plant without sporogonium ; 

 put it in a drop of water on a slide and carefully separate the leaves with the aid of needles. 

 Then examine under the low power and draw : antheridia ; archegonia ; paraphyses. 



Draw an archegonium under the high power to show : stalk ; venter ; neck ; canal 

 cells ; ovum; also draw an antheridium to show the wall and contained spermatozoids. 



