MUSCI. 



353 



of mucilage ; the walls of the sperm-cells break, and the 

 spermatozoids are set free (Fig. 342). The antheridia are 

 frequently intermingled with yariously shaped hairs {para- 

 physes), and about the cluster there may be one or more 





Fie. 341. ' FiQ. 243. 



Fig. ^1.— Female npioductive organs of a moss, Fimw-ia /lygrometrica. A, apex 

 of the stem ; a, archegonia ; 6, leaves. .5, archegonium ; b, base ; h, neck ; m, 

 mouth. O, mouth of fertilized archi-gouium. A x 100, B X 650.— After Sachs. 



Fig. 242. — Male reproductive organs of the same moss. A, antheridium open and 

 permitting the spermatozoids a to escape, i?, &, sperm-cell of another moss {Poly- 

 *rtcAwre), with contained spermalozoid: c, spermatozoid free, with two cells attiie 

 pointed extremity. .4 X 350, .B X 800.— After Sachs. 



whorls of leaves or bracts, giving to the whole much of the 

 appearance of a flower of the Phanerogams. 



462. — The archegonia are elongated flask-shaped bodies, 

 with a swelling base, and a long, slender neck (Fig. 341, 

 B). The wall is composed of a single layer of cells, except 



