VOGENESIS IN THALICTRUM PURPURASCENS 369 
zation occurring and the embryo coming from a 
In A. alpina, however, he found that the egg 
0 without fertilization. In this case the polar : 
, 
en if this explains the division of the upper polar 
;not apply to the lower one. Juel did not follow 
e reduction at that time, but later investigated it 
He found: that tetrad formation does not take - 
eck4 suggested that certain species of Alche= 
genetic. During the summers of 1892 and 18 893 
e€ neighborhood of Stockholm a form of Alche- 
red to be intermediate between two f r hat 
e found the pollen impotent, and yet 
t forms, growing in the Royal Botanical 2 
y of Science of Stockholm, behaved ; 
Gunt v was Sey much out of prop rt 
a ee great number ° 
omer af Alchemill vulgaris. Botaniska Notiser 
