194 REPORT OF THE CONFERENCE ON GENETICS. 
that this fruit was the result of fertilisation by pollen of P. alba 
growing alongside. It is well to mention that the plant which bore 
Fic. 39.—Frvit oF PAssIFLORA ALBA x P. ‘Consrancrk Exnior.? Naruran S1zek. 
the fruit was pot-bound, a condition often conducive to success in the 
setting of fruit. 
Derivatives of Passiflora alba x P. ‘ Constance Elliot.’ 
The seeds from the torn fruit were sown, but if seedlings came up 
all record of them has been lost. From the twenty-three seeds taken 
from the second fruit, three seedlings only appear to have been kept note 
of. It is probable that many more germinated. All three plants, marked 
respectively A, B, and C, appear to be identical with P. alba. The leaves 
are tri-lobed and light green ; the flowers (fig. 40) small, pure white, and 
in structural details correspond with that species. The pollen is very 
copious and evidently perfect. Fruit is borne freely by the plants and 
is all normal. 
One fruit of B contained 74 seeds, and of these 50 were sown, the 
series being marked BI. Another fruit of B contained 164 seeds, of 
