Notes. 
337 
in these forms. In the anatropous ovules of other Amentiferae, where the integument 
is closely united with the nucellus, the vascular supply may have been lost, while in 
the hemi-anatropous ovule of Juliania it has still been maintained. Another feature 
which Juliania has in common with Juglans is the curious outgrowth at the base of 
the ovule — the obturator. In Juglans , where the ovule is orthotropous, there are two 
such outgrowths (see Nicoloff’s 2 Figs. 24 and 25), and it is obvious that in becoming 
hemi-anatropous there might be a tendency in Juliania for one of them to disappear. 
Whatever their morphology or their physiological or biological significance may be, 
JULIMIR JUG- LAM 3 
u 
Text-Fig. Diagrams of young ovules of Juliania and Juglans , reconstructed from Boodle’s 
and Nicoloff’s figures respectively. The obturator 0, single in the case of Juliania , is seen to be 
paired in Juglans. i = integumentary vascular supply ; n = nucellus ; m = main supply bundle to 
ovule. 
it seems to me that their occurrence, paired in the case of Juglans and single in the 
hemi-anatropous ovule of Juliania , strongly supports the close affinity of these two 
plants. (See the Diagrams above.) 
The differences between the ovules of the two plants are explicable by the 
change in the direction of the ovule, while the characters they have in common are 
striking, and one of them, the possession of a vascular supply, is undoubtedly 
of considerable phylogenetic importance. 
On the other hand it should be mentioned in support of the affinities of the 
Julianiaceae with the Anacardiaceae, which seem so strongly indicated by the similarity 
of their anatomical structure, that the ovule of Mangijera also possesses a vascular 
supply in its single integument, though there is no clear indication of the obturator. 
E. M. KERSHAW. 
Manchester University. 
