1917] BRYAN—ARCHEGONIUM OF CATHARINEA 15 
initials are added to the canal row by the cover cell, this investi- 
gation makes it certain that in C atharinea angustata at least 3 initials 
are produced. Just what type of development the representatives 
of other groups of the Bryales will show remains to be seen. 
Conclusions 
The archegonium of Catharinea angustata grows for a time by 
apical as well as intercalary divisions in both canal row and periph- 
eral cells of the neck. In its later stage the entire growth is inter- 
calary. 
The cells of the canal row have a double origin. The lower are 
formed by the intercalary divisions of the primary neck canal cell, 
the upper through the intercalary divisions of the 3 or more initials 
cut from the base of the cover cell. 
How general this condition is among a Bryales must await 
setipad work. 
A 
1. The archegonia of Catharinea angustata begin to sities Se 
April. 
a. The first formed archegonium arises from he apical cell 
region, but whether fron the apical cell itself or from: one of its” pe 
immediate. segments must be determined later. _ oS 
3. In the ERGY shies ad Govelinunca the eeweg ecbagoaturn a 
one 
and | oe primary axial oll gong which on "division oS 
gies te 6 Dee toler Gall sind the anand eel. oe 
s ns aie conten call 00 division = rm he rinary ack ct = 
