GAMETOPHYTE 



83 



which are multiciliate reach the archegonia only in the 

 presence of water. The archegonium is sessile or sunken in 

 the tissue. 



FIG. 45. Walking fern (Camptosorus rhizophyllus) . 1, Roots; 2, leaf; 3, 

 young plant growing from tip of leaf. 



