MUSCINEJE— HEPATIC^— MARCH ANTI ALES 



57 



the receptacle and the origin of the archegonia are the same 

 :is in that just described; but here the growing point of the 



A. 



B 



D 



Fig. 2i.—Fimhriaria Californica. A, Plant with two fully-grown 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 (..r) and an arche- 

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

 the same with an archegonium, X300; x, the apical cell. 



Dranch forms the forward margin of the receptacle, and the 

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



