ASPERULA 39 
Only relatively very few ovaries with normal ovules therefore are 
to be found, and from these only few seeds were produced under 
the cultural conditions at 
Bonn, where the material 
was collected. In view of 
these facts, therefore, the 
failure to observe fertiliza- 
tion in the abnormally 
placed embryo-sacs is not 
surprising. On the other 
hand, there are grounds for 
expectation that the beha- 
vior of the pollen tubes is 
Fic, 3, 
such as to favor such an (gi. ui 1 
occurrence. 
Part of embryo-sac occurring in the 
wing egg apparatus, 
Further peculiarities occur in the behavior of the normally 
placed embryo-sac in Asperula montana, in that its growth con- 
tinues often until the egg end projects beyond the mouth of the 
G. 
nucleus.' 
Protruding embryo-sac with ¡two nuclei in mitosis, Ani., Antipodal 
Fic. 5. Protruding embryo-sac with at least seven antipodal nuclei. Polar nuclei 
not yet fused. 
