- thep] BRIEFER ARTICLES 361 
- occupy in the normal antheridiophore. The tissue surrounding them 
resembles that of the latter receptacle, while the tissue of the lower 
portion is that of the ordinary archegoniophore. 
There is a question whether this is merely an abnormal condition 
o whether it is a reversion to an earlier type. In the Ricciacee the 
_ two organs may either be produced together or, as is often the case with 
Riwia glauca and Riccia hirta, they may be found on the same part of 
4 
POL ) 
Q 
Y 
ASU Or 
Ny, 
We 
Reet 
oe” 
sean 
ata 
Ra 
by 
ae 
84 
CTT Sarees eS Ws et, LER, Wik 
Ra < DOR pn 
i coome ee en Se LF. 
Sei 
5 
oa 
eee 
or 
Lo 
on 
i 
2e5 
Bae 
gece 
{? 
ies 
ue 
Qos 
arts 
Ns 
S 
erm 
Fic. 1.—Section of hermaphrodite gametophore of Preissia commutata. 
e organ being produced 
of the 
“ed and As the reproductive organs became 
devel Specialized, the gametophore might natura 
ott and specialization, and in time have co 
Me 
# 
