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Às the result of his research he says: , Demnach ist es 
jetzt auch meine feste Ansicht, dass die normale weibliche 
Blüte von Ginkgo nur aus zwei Ovularblättern, nämlich 
den zwei transversalen Samenanlagen besteht” (p. 14). The 
conclusions, to which von Wettstein and Celakovsk\ 
have come, however, are not wholly complete, which 
may be attributed partially to the material being unsuff- 
cient in number. The occurrence of four unstalked ovules 
on one strobilus Î have found amongst my own material 
in 21 of these specimens. 
Ît seems to me that von Wettstein attaches too 
much importance to the morphological value of the vascular 
supply. When the vascular bundles are divided in the 
axis of the strobilus to enter the stalklet of the ovule, 
this may have a clearly physiological tendency, because 
if new ovules have originated in some way as a retro- 
gression or as a progression, they miss a nutritive strain, 
which can only be required by a splitting of the existing 
ones. The ovules are not divided for the sake of the 
vascular bundles, which have split, but these are splitting 
because new ovules are formed. And as concerns the 
view, that the normal order of the ovules should be the 
decussate one, Ï can not agree with this. The position of 
the sporophylls on the strobilus in the probably most 
original form, has just been the same as the leaves on the 
ordinary shoot, the one or two lowermost pairs standing 
decussate, the others in a spiral order. Therefore it is 
clear, that in the now existing reduced strobili, on which 
only the lower sporophylls are developed, these are 
decussate, but it may not be called the normal order, 
this being the spiral one. 
My own research may confirm this. ] have examined 
a great many short shoots, in which strobili were present, 
and Ï have found the following. Of the 114 examined 
brachyblasts were 76, in which the first strobilus, which 
