WRIGHT: THE GENUS DIOSPYROS 
stamen of a pair is very small and contains very little, if any 
pollen when mature. 
On the other hand, the staminodes of each female flower 
are always five in number, epipetalous, and arranged so as to 
alternate with the corolla segments. 
It is therefore to be noted that in the species which are 
monoecious only the staminodes are constant in position and 
number, the stamens may equal or double the staminodes in 
number, and a rudimentary pistil usually occurs in the 
centre of each male flower. As to whether the male flower 
can be derived from the female, or viceversd,bj sterilization 
of sporogenous tissue, nothing need be said in this part of 
the paper. 
Dwciaus and Polygamous.—This occurs in D. sylvatica, 
D. Gardneri, D. afflnis, D. Embryopteris, and D. insignia. 
Under this section we most differentiate between the 
polygamous condition doe to replacement of a staminode by 
a stamen, as in D. Embryopteris, and that doe to the pistil 
of a male flower exerting its potentiality, as in D. afflnis, D. 
sylvatica, and D. Gardneri. 
wuh the 
ovary ™ i * * 1 ptl1 haviI >g an eight-celled 
~ «£• --^.^LZXn 
may be repl'Z b*' ^ Staminodes of female flower 
poiygamons state. ^ « ^ens, thns giving rise to a 
likewise show an oc^iZ f Jf™ ° f the 
poiygamons condition on the sZZ 181 ' 1 ’ reS ° lting “ * 
w! n “'e 8J !r ti ? D - G " dneri > ^ insignia and D afflni. 
iffi ° i0M “ d Polygamous 'conditions welt 
> twelve i 
