n 



MUSCINEAi— HEPATIC Al—M ARCH ANTIALRS 



0/ 



the receptacle and the origin of tlie archegonia are the same 

 as in that just descrihed ; Ixit here tlic growing point of the 



A 



B 



sp-- 



per ' I'- 



D 



Fig. 21. — Fimhriaria Californica. A, Plant with two fnlly-grcwn sporogonial recep- 

 tacles, natural size; B, single receptacle, X4; C, the same cut longitudinally, 

 showing the sporogonium {sp), enclosed in the perianth (per); D, nearly median 

 section of a young receptacle, showing one growing point (.v) 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; .r, 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 



