186 



BOTANY. 



gonium, or archegone. It bears some resemblance to the 

 corresponding organ in the Stoneworts (p. 181), and, like 



Fig. 103.— Archegones of the Common Liverwort in Various stages of develop- 

 ment, J to F; e, germ-cell. FJ, fertilized germ-cell, /, divided once. VII and 

 Vni, further development of germ-cell; %tp, the perianth in various stages. ZX, 

 germ-cell now developed into a spore-fruit, /, filled with spores and elaters; a, 

 the greatly distended wall of the archegone. X, immature and mature elaters 

 and spores. All magnified. 



it, has an internal cell (the germ-cell) to be fertilized, sur- 

 rounded by an envelope of protective cells (Fig. 103, 1- V). 



