MUSCINE^—HEPA TIC ^— MARCH ANTI ALES 



57 



the receptacle and the origin of the archegonia are the same 

 ^s in that just described; but here the growing point of the 



Fig. 21. — Fimbriaria Calif ornica. A, Plant with two fully-grown sporogonial recep- 

 tacles, natural size ; B, single receptacle, X 4; C, the same cut longitudinally, 

 showing the sporogonium (.sp), enclosed in the perianth iper); D, nearly median 

 section of a young receptacle, showing one growing point {x") and an arche- 

 gonium (ar); L, air-spaces; st, a pore; r, rhizoids, X40; E, the growing point of 

 the same with an archegonium, X300; ;*■, the apical cell. 



branch forms the forward margin of the receptacle, and the 

 stalk is a direct continuation of the axis of the branch. Upon 



