30 
Elongata is now quite widely distributed, but has received very 
little attention. In many parts of the East it is known as the "Ceylon 
papaya" or the "Ceylon Long," the seed having been distributed 
from that center. It is believed to have been sent to Hawaii from 
Ceylon by Prof. A. Koebele about the year 1896. 
To one seeking for a monoecious or hermaphroditic ancestry for 
the common papaya, the idea may suggest itself that the evolution 
has been from elongata through correse to the pure staminate, but 
on such a hypothesis it is difficult to account for the nonfunctioning 
staminate flowers of elongata, while those of correse are so active. 
Further, if elongata were the more primitive type, it is to be pre- 
sumed that it would have become more generally distributed at 
very early times and would have attracted the attention of botanists 
who, as has been shown, have scarcely mentioned it, while correse 
and the strictly dioecious form of papaya have been described in 
detail. 
Form 5. The sterile hermaphrodite is merely the extreme of 
barrenness in form 4. 
Form 10. The andromonoecious form with the misplaced ovules. 
This is a peculiar, but significant, arrangement of sex organs. It 
will be recalled (see p. 22) that the peculiarity of the form is in its 
occasionally producing ovules on the stamens of its hermaphrodite 
flowers. There can be no doubt that it has been derived from the 
ordinary male tree, but its peculiar significance lies in the tendency 
which it shows to convert some of its stamens into carpels, and, 
therefore, in the light which it throws upon the peculiarities of the 
form 6. 
Form 6, forbesii. Here the process has gone on so far that the 
ten stamens of the ordinary male have been reduced to five, the inner 
five apparently having been changed to carpels. There are several 
indications of this, (a) The fruit is very deeply furrowed, often 
showing the newly formed carpels quite separated from each other at 
the top, and for a considerable distance toward the base, (b) An- 
thers are often found upon the carpels, (c) Occasionally within a 
fruit formed of such carpels a body resembling another papaya 
fruit is to be found (PI. VIII, inset), which may be regarded as the 
original ovary which in the ordinary forbesii has been eliminated, 
(d) One of these irregular and partly separated carpels is some- 
times rolled within the others, giving an effect somewhat similar 
to the one just cited. 
It appears probable that forbesii as found to-day has been developed 
from the ordinary male form, through a process hinted at in form 
10, and by conditions similar to those which are believed to have 
produced correae. Why the evolution should take place along 
these two different lines is an interesting question. 
