MU8GI 



353 



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

 spermatozoids are set free (Pig. 242). The antheridia are 

 frequently intermingled with variously shaped hairs (jpara- 

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



1>'IG. 341. 



fflG. 242. 



Fig. 341.— Female repiodnctive ortrana of a moss, Fmiana liygmmetHca. A, apex 

 of the Btem ; o, archegonia ; i, leavis. B, archegonium ; 6, base ; 7i, neck ■ m 

 mouth. O, mouth of fertilized archegonium. A x 100, JB X 560— After Sachs. ' ' 



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

 permitting the spermatozoids a to escape. B, 6, sperm-cell of another moss i^Poly- 

 ^c/i?*m), with contained spermatozoid; o, spermatozoid free, with two ceils at the 

 pointed extremity. A X 850, 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 ilask-shaped bodies, 

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

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



