20 
Form 3. Correse of Solms-Laubach. This form is a departure 
from the last and is illustrated in Plate IV, figure 2. It is identical 
with the tree just referred to except that a few of its flowers have pis- 
tils capable of fecundation. The rays of the stigmas may be per- 
fectly formed or one or more may be aborted, giving rise to an uns}^m- 
metrical or gibbous fruit in which the corresponding portions of the 
placenta have failed to develop. The ovaries of the well-formed her- 
maphrodite flowers incline more to the elongated and cylindrical form 
than those of the pistillate tree and result in correspondingly different 
fruits. The corolla tube is elongated as in the staminate flowers and 
the stamens are similarly located in the throat of the corolla, being 
brought into proximity with the stigmas. These bisexual flowers 
are larger than the staminate but in other respects are similar, except 
as has just been indicated. The number of such flowers varies from 
few to many (PI. V, figs. 1 and 2), there being at times as many form- 
ing fruits on the long pendulous peduncles as are to be found on some 
pistillate trees, notwithstanding the fact that many have fallen. 
Often as the fruit develops the peduncle is not strong enough to sus- 
tain the weight and breaks off, such long fruit stems being poorly 
adapted to their work of supporting the fruit and inviting disaster 
from the winds. 
What causes may have given rise to the formation of bisexual flow- 
ers on these otherwise male trees and to what extent such plants may 
be regarded as varietal in their rank may be referred to later. Here 
it is intended merely to point out that such forms exist and to indi- 
cate their character. This form of andromonoecious * papaya was 
described by Correa de Mello and Spruce, 2 and in honor of the former 
has been named by Solms-Laubach 3 form correa?. 
Attention has just been called to the variations in the number of 
fruits produced by this form correse. It may also be pointed out that 
there are many gradations in the length of the peduncles. 
Form 4. Elongata, a hermaphrodite papaya (PI. VI). This tree 
produces two types of flowers. One of these types is hermaphrodite 
and is in every way similar to a well-formed bisexual flower on the 
correas form (form 3), except that it usually is larger and its pistil is 
more elongated ( PI. VII, fig. 1) . The other type of flower is staminate 
and is identical in appearance with the staminate flowers already de- 
scribed. Because of the presence of these two types of flowers, this 
form has been referred to in the earlier publications of this station 
as the monoecious papaya. 4 
1 Having both staminate and hermaphrodite flowers on the same plant. 
* Jour. Linn. Soc. [London], Bot., 10 (1869), p. 3. 
a Die Heimath und der Ursprung des cultivirten Melonenbaumes, Carica papaya. Bot. Ztg., 47 (1889), 
Nos. 44-49. 
♦ Hawaii Sta. Rpts. 1910, 1911, and 1912. 
