FLAT FORK MOSS 



107 



longitudinally with a razor, and notice the dense packing of the 

 sperm-pockets and hairs. Squeeze a sperm-pocket on a slide ; 

 the liquid which oozes out contains the sperms or male cells. 

 The female " flowers " are more like the barren shoots, but they, 



V 



FIG. 23.- A, shoot of Flat Fork Moss (Fissidens) with fruit ; B, leaf of same, 

 magnified ; C, Apple Moss (Bartramia) ; D, shoot of Four-toothed Moss 

 (Tetraphis) with cup containing brood-bodies; E, capsule of same 

 closed ; F, ditto, open. 



like the male shoots, have small leaves below and larger upper 

 ones, in the centre of which lie the egg-pockets, long-necked 

 flask-like bodies easily seen on teasing out the " flower." 



Several other top-fruiting mosses are common in woods and 



